Staff Sgt. Daniel Massingill, C-5B Galaxy flight engineer with the 312th Airlift Squadron, preflights the aircraft for takeoff from Kadena Air Base, Japan, 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 Pacific Command area of responsibility. Lt. Col. Robert Couse-Baker

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Photo credit: © Z2A1 / Alamy / Afripics
License: Licensed
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