A C-17 Globemaster III, assigned to Joint Base Charleston,

A C-17 Globemaster III, assigned to Joint Base Charleston, approaches a KC-135 Stratotanker for an inflight refueling July 31, 2019, over South Carolina. Joint Base Charleston's Mobility Airmen contribute to global airlift mobility efforts as part of combat ready C-17 aircrews that maintain air refueling, low-level airdrop, aeromedical and humanitarian capabilities. In 2015 the worldwide C-17 fleet reached three million flying hours, the equivalent of flying a single C-17 nonstop for 342 years. (U.S. Air Force photo by Senior Airman Joshua R. Maund)