Staff Sgt. Austin Overbaugh, an aerospace propulsion maintainer with the 437th Aircraft Maintenance Squadron at Joint Base Charleston, S.C., and Staff Sgt. Adrian Rincones, a 437th AMXS crew chief, prepare a C-17 Globemaster III for takeoff during Red Flag 16-3 at Nellis Air Force Base, Nev., July 20, 2016. Red Flag enhances aircrews’ combat readiness and survivability by challenging them with realistic combat scenarios. (U.S. Air Force photo/Airman 1st Class Kevin Tanenbaum)