Airmen perform C-17 Globemaster III engine checks
Staff Sgt. Jennifer Smith, 437th Maintenance Group jet-propulsion specialist, runs her hand along the inside of a C-17 Globemaster III engine inspecting for cracks, bumps or other flaws during a routine maintenance check June 26, 2013, at Joint Base Charleston – Air Base, S.C. Airmen from the 437th MXG perform routine maintenance to C-17s daily. (U.S. Air Force photo/ Senior Airman Dennis Sloan)