Good evening. Late today, federal investigators said the new yorkbound commuter train that derailed this weekend was doing over 80 miles an hour going into a tight and critical turn that is meant for speeds of only 30. If these were highspeed commuter trains that would be one thing. These same track beds were used when fdr took the train north to hyde park. Something went wrong sunday morning. The process of determining if it was human error or mechanical error or both is now under way. So is the grieving for the victims of this crash and recovery for the injured. We begin tonight just above the scene of the wreck with nbcs tom costello. Tom, good evening. Reporter brian, good evening. Behind me is the George Washington bridge. Down below, the tracks flooded with lights. They have removed all of the trains. The ntsb talked to the engineer on the train. We dont know exactly what hes told them about the crash. Its not clear that there wasnt a mechanical problem. But we can say that the n