MSNBC Live with Stephanie Ruhle 12/19/17

NTSB: Derailed Amtrak train 'was travelling 80mph'

Bella Dinh-Zarr, a National Transportation Safety Board member, tells MSNBC's Stephanie Ruhle that information from the black box recorder showed the train that derailed in Tacoma, Washington was traveling at 80 mph. ... more Duration: {{video.duration.momentjs}}