Air Force Staff Sgt. Brandon Brooks conducts F-16 refueling operations at Davis-Monthan Air Force Base, Tucson, AZ, November 21, 2009. The 121FS, D.C. Air National Guard, is receiving two weeks of training in preparation for an upcoming Aerospace Expeditionary Force deployment in 2010. (U.S. Air Force photo by Staff Sgt. Gareth Buckland/Released)