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Evacuations urged in Ohio town as train wreck smolders

East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) East Palestine resident Kathy Burr waits for help at the Norfolk Southern Assistance Center at the East Palestine Community Center on Sunday, Feb. 5, 2023, in East Palestine, Ohio. Ms. Burr says she had smoke from the train derailment billowing in her home. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) East Palestine police block roads in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Equipment and gravel pile up along the railroad tracks in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An employee of HEPACO works in a creek along Sumner Street in downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) Smoke still billows from the remains of the train derailment in East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) An Ohio state trooper goes door to door telling residents to leave downtown East Palestine, Ohio, on Sunday, Feb. 5, 2023. A smoldering tangle of dozens of derailed freight cars, some carrying hazardous materials, has kept an evacuation order in effect in Ohio near the Pennsylvania state line as environmental authorities warily watch air quality monitors. (Lucy Schaly/Pittsburgh Post-Gazette via AP) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar) This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday, Feb. 4, 2023. (AP Photo/Gene J. Puskar)