Aircrew members perform pre-flight checks on a C-17 Globemaster III before take-off to practice combat on-loading and off-loading 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 53 assigned 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)

Aircrew members perform pre-flight checks on a C-17 Globemaster III before take-off to practice combat on-loading and off-loading 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 53 assigned 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)

A C-17 Globemaster III taxis to the runway before taking off to perform “touch and goes” 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 53 assigned 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)

A C-17 Globemaster III taxis to the runway before taking off to perform “touch and goes” 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 53 assigned 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)

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)

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)

A Humvee is loaded onto a C-17 Globemaster III during an exercise to practice combat on-loading and off-loading 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 53 assigned 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)

A Humvee is loaded onto a C-17 Globemaster III during an exercise to practice combat on-loading and off-loading 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 53 assigned 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)

A Humvee is loaded onto a C-17 Globemaster III during an exercise to practice combat on-loading and off-loading 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 53 assigned 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)

A Humvee is loaded onto a C-17 Globemaster III during an exercise to practice combat on-loading and off-loading 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 53 assigned 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)

Aircrew members perform pre-flight checks on a C-17 Globemaster III before take-off to practice combat on-loading and off-loading 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 53 assigned 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)

Aircrew members perform pre-flight checks on a C-17 Globemaster III before take-off to practice combat on-loading and off-loading 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 53 assigned 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)

A Humvee is loaded onto a C-17 Globemaster III during an exercise to practice combat on-loading and off-loading 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 53 assigned 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)

A Humvee is loaded onto a C-17 Globemaster III during an exercise to practice combat on-loading and off-loading 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 53 assigned 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)

A C-17 Globemaster III takes off to perform “touch and goes” 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 53 assigned 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)

A C-17 Globemaster III takes off to perform “touch and goes” 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 53 assigned 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)

Senior Airman Joseph Goodman, 437th Aerial Port Squadron passenger terminal technician, marshals a Humvee off a C-17 Globemaster III while practicing combat on-loading and off-loading 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 53 assigned 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)

Senior Airman Joseph Goodman, 437th Aerial Port Squadron passenger terminal technician, marshals a Humvee off a C-17 Globemaster III while practicing combat on-loading and off-loading 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 53 assigned 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)