The executive director of the Rail Employees Union now says 46-year-old engineer William Rockefeller, who was injured in crash, has said he caught himself "nodding off" at the controls.
Rockefeller told police he "zoned out" and doesn't remember any of the events just before the metro north commuter train left the tracks.
Read More: http://bit.ly/1kayk2O
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.