ATSO exercise
MACDILL AIR FORCE BASE, Fla. (AFPN) -- Staff Sgt. Joseph Cook guards his defensive fighting position during an ability to survive and operate exercise here. The exercise, held Dec. 7, trains Airman to survive and accomplish their mission under adverse combat conditions. Sergeant Cook is a security forces troop with the 6th Security Forces Squadron here. (U.S. Air Force photo by Airman 1st Class Bradley A. Lail)