Senior Airman Mike Bowker, 437th Aircraft Maintenance Squadron crew chief, communicates with aircrew members inside the cockpit of a C-17 Globemaster III during pre-flight checks July 17, 2013, at Joint Base Charleston – Air Base, S.C. Airmen from the 437th Airlift Wing work around the clock on the flightline to provide combat-ready C-17A aircrews, mission support personnel and processes for 53assigned aircraft to meet White House, Department of State and Joint Chiefs of Staff-directed global deployment, employment and resupply of Department of Defense and allied forces via air land and airdrop operations.(U.S. Air Force photo/Senior Airman Dennis Sloan)