Photo: C-17 refuels in mid-air

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A C-17 Globemaster III from the 437th Airlift Wing flies behind a KC-135R Stratotanker from the 434th Air Refueling Wing during an aerial refueling mission Aug. 4, 2010 near Grissom Air Reserve Base, Ind. The 437th AW is based out of Joint Base Charleston, S.C., and the 434th ARW is at Grissom ARB. (U.S. Air Force photo/Tech. Sgt. Mark R. W. Orders-Woempner)