Staff Sgt. Daniel Massingill, C-5B Galaxy flight engineer with the 312th Airlift Squadron, descends the stairs from the flight deck to the cargo box during preflight operations at Joint Base Pearl Harbor-Hickam, Hawaii, Aug. 15, 2014. Flight engineers control key systems on the aircraft, including fuel management, electronics and environmental systems. He was flying a mobility channel mission, moving high-priority cargo and passengers among air bases in the U.S. Pacific Command area of responsibility. (U.S. Air Force photo/Lt. Col. Robert Couse-Baker)
Lt. Col. Robert Cousebaker
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