happened in an instant. what they want to try and figure out is was there anything that might have led up to this that they might be able to use as they try to piece together what happened here and also try to prevent this from happening again. we talked to people who were on this train, including one of our own nbc news producers, janelle richards who told me that it was a very normal train ride until suddenly it wasn't and she found herself being thrown out of her seat and trying to find a way out of that train. i talked to former congressman patrick murphy who said pretty much the same thing, he had taken that train because he wanted to get home to see his two young children so he could wish them a good night and luckily he was able to do that. >> he will join us a little bit later, as well as one of the images that he took from the cafe car, the area where many people stop to eat and kind of hang out on the train, his picture was on the front page of the new york times.