Airmen participate in ATSO training
Staff Sgt. Brandon Carpenter, left, and Airman 1st Class Derrick Bone, both members of the 66th Security Forces Squadron, participate in a training exercise at Hanscom Air Force Base, Mass., Nov. 2. The ability to survive and operate, also known as ATSO, training, allows Airmen to perform their mission while wearing chemical protective suits. (U.S. Air Force photo by Mark Herlihy)