Associated Press, "Air controller in Ky. crash slept only 2 hours; Man was on overnight shift after working early morning duty"

          In the day leading up to the crash of Comair Flight 5191, a federal investigator says the air traffic controller on duty had worked for almost 15 hours and slept for two. The controller had only nine hours off between work shifts Saturday.
          That was just enough to meet federal rules, which require a minimum of eight hours off between shifts. “He advised our team that he got approximately two hours of sleep,” the investigator said.
         It was the latest revelation in an investigation that has raised numerous questions about human error. Hersman said earlier this week that the plane crashed after veering down a wrong, shorter runway when the controller turned his back to handle administrative duties.