On Monday, the National Transportation Safety Board released a transcript of its interview with engineer William Rockefeller two days after the Dec. 1 accident.
According the transcript, Rockefeller says his run from Poughkeepsie to Manhattan was proceeding normally until "that hypnotized feeling" came over him.
He said he was roused only when he sensed something wrong with the train and "instinctively" shut it off or threw it into emergency braking.
The NTSB also says it discovered that Rockefeller had a serious disorder that interrupted his sleep dozens of times each night. The "severe obstructive sleep apnea" had apparently been undiagnosed.
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