Senior Airman Edward Bachelor (right) and Senior Airman Michael Bowker (left), 437th Aircraft Maintenance Squadron crew chiefs, prepare to perform preflight checks on a C-17 Globemaster III during a training exercise April 10, 2013, at Joint Base Charleston – Air Base, S.C. Thirteen C-17s participated in the exercise which included airdrops, aerial refueling and low-level tactical training. The exercise is a total-force effort with aircrews consisting of active-duty Airmen from the 437th Airlift Wing and 315th AW, and completed over 600 training requirements in a single day. (U.S. Air Force photo/Senior Airman George Goslin)

Chief Master Sgt. Jeanette King, 437th Operations Group superintendent, marshals in a k-loader to load cargo during a training exercise April 10, 2013, at Joint Base Charleston – Air Base, S.C. Thirteen C-17s participated in the exercise which included airdrops, aerial refueling and low-level tactical training. The exercise is a total-force effort with aircrews consisting of active-duty Airmen from the 437th Airlift Wing and 315th AW, and completed more than 600 training requirements in a single day. (U.S. Air Force photo/Senior Airman George Goslin)

C-17 Globemaster IIIs taxi towards the runway for takeoff during a training exercise April 10, 2013, at Joint Base Charleston – Air Base, S.C. Thirteen C-17s participated in the exercise which included airdrops, aerial refueling and low-level tactical training. The exercise is a total-force effort with aircrews consisting of active-duty Airmen from the 437th Airlift Wing and 315th AW, and completed over 600 training requirements in a single day. (U.S. Air Force photo/Senior Airman George Goslin)

A C-17 Globemaster III performs an aerial drop over North Auxiliary Airfield during a exercise April 10, 2013, at Joint Base Charleston – Air Base, S.C. Thirteen C-17s participated in the exercise which included airdrops, aerial refueling and low-level tactical training. The exercise is a total-force effort with aircrews consisting of active-duty Airmen from the 437th Airlift Wing and 315th AW, and completed over 600 training requirements in a single day. (U.S. Air Force photo/Senior Airman Dennis Sloan)

A C-17 Globemaster III performs an aerial drop over North Auxiliary Airfield during an exercise April 10, 2013, at Joint Base Charleston – Air Base, S.C. Thirteen C-17s participated in the exercise which included airdrops, aerial refueling and low-level tactical training. The exercise is a total-force effort with aircrews consisting of active-duty Airmen from the 437th Airlift Wing and 315th AW, and completed over 600 training requirements in a single day. (U.S. Air Force photo/Senior Airman Dennis Sloan)

A pallet dropped from a C-17 Globemaster III falls over North Auxiliary Airfield during an exercise April 10, 2013, at Joint Base Charleston – Air Base, S.C. Thirteen C-17s participated in the exercise which included airdrops, aerial refueling and low-level tactical training. The exercise is a total-force effort with aircrews consisting of active-duty Airmen from the 437th Airlift Wing and 315th AW, and completed over 600 training requirements in a single day. (U.S. Air Force photo/Senior Airman Dennis Sloan)

Joint Base Charleston personnel perform a foreign object debris walk after participating aircraft took off during a training exercise April 10, 2013, at Joint Base Charleston – Air Base, S.C. Thirteen C-17s participated in the exercise which included airdrops, aerial refueling and low-level tactical training. The exercise is a total-force effort with aircrews consisting of active-duty Airmen from the 437th Airlift Wing and 315th AW, and completed over 600 training requirements in a single day. (U.S. Air Force photo/Senior Airman George Goslin)