Tech. Sgt. Randy Thornsberry Jr. (Center), 372nd Training Squadron Detachment 21, maintenance instructor, instructs his students during a maintenance inspection of an RQ-4 Global Hawk Jan. 20, 2015, at Beale Air Force Base, Calif. Thornsberry is tasked with teaching the first class of the RQ-4 remotely piloted aircraft maintenance course. (U.S. Air Force photo by Senior Airman Bobby Cummings/Released)
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