71st Expeditionary Air Control Squadron
Airman 1st Class Christopher Kelly, 71st Expeditionary Air Control Squadron radar maintenance technician and native of Denver, performs diagnostic tests on a TPS-75 radar here March 13, 2012. The 71st EACS controls the airspace over Afghanistan, coordinating close air support, surveillance, special operations, and air refueling missions for both aircraft and troops on the ground. (U.S. Air Force photo/Staff Sgt. Nathanael Callon)