Staff Sgt. Patrick Harrington works out in the Human Performance Training Center during squadron physical training March 22, 2013, at Kadena Air Base, Japan. The HPTC houses the Human Performance Program, which focuses not only on physically strengthening a battlefield Airman, but also rehabilitating them to ensure they are performing to their maximum potential for as long as possible. Harrington is with the 320th Special Tactics Squadron. (U.S. Air Force photo/Tech. Sgt. Kristine Dreyer)