Sleep apnea led to tired engineers and 2 train crashes, NTSB says

(CNN) – Sleep apnea led to two commuter railroad accidents within 13 weeks of one another, the National Transport Safety Board said Tuesday. The NTSB said the sleep disorder caused engineer fatigue and that in both accidents, engineers failed to stop their trains before reaching the end of a terminating track.One of the accidents — a New Jersey Transit train packed with passengers at the height of morning rush hour in September 2016 — entered Hoboken station, failed