U.S. Air Force Airman 1st Class Jon Peterson, 455th Expeditionary Aerial Port Squadron aerial porter, receives Check Six program instruction at Bagram Airfield, Afghanistan Oct. 21, 2014. The program is designed to increase military members’ awareness and practice muscle memory that will become critical in the event of an attack or violent occurrence. Peterson is deployed from Travis Air Force Base, Calif. and a native of Fairbanks, Alaska. (U.S. Air Force photo by Staff Sgt. Evelyn Chavez/Released)