2 Amtrak construction workers killed when Amtrak train strikes backhoe

Investigators arrived on the scene Sunday to start unraveling how and why an Amtrak train crashed into a backhoe on a track near Philadelphia, killing two people. Their job will take time. "We're still gathering the facts," said Ryan Frigo, the person in charge of investigating the crash for the National Transportation Safety Board. Here's a look at what we know -- and don't know -- so far...
Read more: http://snapzu.com/hiihii/2-amtrak-construction-workers-killed-when-amtrak-train-strikes-backhoe