Staff Sgt. Kira Enlow, 633rd Civil Engineer Squadron firefighter, uses a 10-pound hammer to move a 160-pound sled Aug. 14, 2012, at Langley Air Force Base, Va. Enlow is on a team composed of seven 633rd CES firefighters who will take part in a regional Firefighter Combat Challenge, Aug. 17 and 18, 2012, in Charleston, W.Va. (U.S. Air Force photo by Airman 1st Class R. Alex Durbin/Released)