CNN Anderson Cooper 360 December 4, 2013 01:04:00
Restorative sleep. >> reporter: they say the eng e engineer is cooperating. >> he's a strong man and it takes a strong man to come down and be honest, and that's what billy is doing. >> reporter: on the question of the brakes, rockefeller claimed they didn't work at the time of the crash. >> we've determined that the metro north mechanical department performed a proper brake test prior to the accident train leaving the station, and there were no alom knees noted. based on this data, there is no indication the brake systems were not functioning properly. >> reporter: the facts, 82 miles per hou...