MSNBCW NOW With Alex Wagner May 13, 2015
onboard described what it felt like before the crash. >> it felt like it was going fast. is that because it really was going fast or because of the consequence of what happened i really can't say. but it did feel fast. and it did feel like it was -- could have been speed that caused the liftoff that i felt. >> teams of investigators are on the scene in philadelphia with the ntsb set to hold its next briefing at the top of the hour at 5:00 p.m. eastern. this photo shows the train's black box, which has been recovered and is being analyzed by experts. today, cranes are at work lifting ...