Tech. Sgt. Justin McCaffrey, 19th Operations Support Squadron survival, evasion, resistance and escape noncommissioned officer in charge, watches for possible simulated enemy threats July 30, 2014, at Fort Polk, Louisiana. McCaffrey trained Airmen from the 19th Airlift Wing as part of Green Flag Little Rock exercise, a joint training exercise with the Army to prepare for deployed environments. (U.S. Air Force photo/Airman 1st Class Harry Brexel)