1. Federal Report Blames A Type Of Sleep Apnea For Train Crashes  NPR
  2. Sleep apnea led to tired engineers and 2 train crashes, NTSB says  CNN
  3. Federal safety officials blame engineer fatigue for two New York-area commuter train crashes  Washington Post
  4. Failure to Screen for Sleep Apnea Led to 2 Recent Train Crashes  New York Times
  5. Full coverage

Source: google