Tech. Sgt. Mark Graveline fuels a C-17 Globemaster III aircraft March 16, 2012 at Tyndall Air Force Base, Fla. During the mission, Sergeant Graveline helped deliver 50,000 lbs. of cargo, along with a combined team of 50 Airmen and contractors from the 325th Maintenance Group at TAFB, to Naval Air Station Key West, Fla. Sergeant Graveline is a flying crew chief with the 31th Aircraft Maintenance Squadron at Joint Base Charleston, S.C. (U.S. Air Force photo/Staff Sgt. Shane Ellis)