Tech. Sgt. Curtis Smith, 340th Expeditionary Air Refueling Squadron boom operator, maintains control of the refueling boom aboard a KC-135 Stratotanker during an air refueling mission in the skies of Afghanistan supporting Operation Enduring Freedom, May 17.
<br>Unit: U.S. Air Forces Central Command Public Affairs
Master Sgt. William Greer
Taken on 17 May 2011
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