FILE - In this Aug. 14, 2013, file photo, fire crews work the scene of a UPS cargo plane crash at the Birmingham-Shuttlesworth International airport in Birmingham, Ala. Federal investigators are looking at pilot fatigue, among other issues, as a possible factor in the fatal predawn crash of a UPS cargo jet. The National Transportation Safety Board scheduled a hearing for Feb. 20, 2014, on the accident, which killed both pilots.(AP Photo/Butch Dill, File)