Close air support
Airman 1st Class Ben Davis refuels a B-52 Stratofortress bomber from a KC-135 Stratotanker, Monday, March 13, 2006, during a mission in support of Operation Enduring Freedom. The B-52 provides close air support for ground troops in Afghanistan. Davis is a boom operator assigned to the 28th Expeditionary Air Refueling Squadron. (U.S. Air Force photo/Staff Sgt. Douglas Nicodemus)