Hoover Dam transformer explodes; no one hurt


              Firefighters spray water after a fire on the Arizona side of the Hoover Dam, Tuesday, July 19, 2022, near Boulder City, Nev. Officials say no one was injured when a transformer at Hoover Dam briefly caught fire Tuesday morning. (AP Photo/John Locher)
            
              Firefighters spray water after a fire on the Arizona side of the Hoover Dam, Tuesday, July 19, 2022, near Boulder City, Nev. Officials say no one was injured when a transformer at Hoover Dam briefly caught fire Tuesday morning. (AP Photo/John Locher)
            Firefighters spray water after a fire on the Arizona side of the Hoover Dam, Tuesday, July 19, 2022, near Boulder City, Nev. Officials say no one was injured when a transformer at Hoover Dam briefly caught fire Tuesday morning. (AP Photo/John Locher) Firefighters work after a fire on the Arizona side of the Hoover Dam, Tuesday, July 19, 2022, near Boulder City, Nev. Officials say no one was injured when a transformer at Hoover Dam briefly caught fire Tuesday morning. (AP Photo/John Locher) In this image provided by the U.S. Bureau of Reclamation, firefighters extinguish a fire at the Hoover Dam that borders Nevada and Arizona on Tuesday, July 19, 2022, near Boulder City, Nev. The agency said no one was injured. (U.S. Bureau of Reclamation via AP)