Updated Apr 16, 2013 - 11:55 am
Karie and Chuck: Is it a sign of the times?
1:35p.m.: A former Phoenix-area security expert joins us to talk about how Phoenix prepares for something like a Boston Marathon bombing.
2:35p.m.: Most of you are like us and you're asking "why have so many tragic events like Boston occurred in the past few years?" We'll discuss why.