170126-F-GX122-015

U.S. Air Force Airman 1st Class Brian Dowling, 27th Aircraft Maintenance Unit crew chief, conducts preflight checks on an F-22 Raptor during Red Flag 17-1 at Nellis Air Force Base, Nev., Jan. 26, 2017. Preflight checks are conducted to ensure aircraft are safe to fly in the large force, coalition exercise. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)

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