Name: National Transportation Safety Board investigates Amtrak crash
Uploaded: Thu May 14 2015 20:41:00 GMT+0000 (UTC)
Duration: 4 min 25 s
Description: National Transportation Safety Board lead investigator Robert Sumwalt discusses the NTSB’s investigation into the Philadelphia Amtrak crash.

May 14, 201504:25

NTSB investigates Amtrak crash