CNN At This Hour With Berman and Bolduan May 14, 2015 15:06:00
Miles per hour zone. that's how fast the amtrak train was going when the derailment happened. investigators trying to figure out if excessive speed, or something else, like maybe faulty brakes or something else or human error, what really was the cause behind the crash. the philadelphia mayor, michael nutter, he thinks the train engineer is at least partly to blame. >> clearly he was reckless and irresponsible in his actions. i don't know what was going on with him. i don't know what was going on in the cab but there's really no excuse that could be offered literally unless he had a heart atta...