U.S. Air Force Airman 1st Class Trevor Puerile, 633rd Security Forces Squadron installation entry controller, swings across the Battle Rig peg board during the Alpha Warrior Northeast Regional Competition at Joint Base Langley-Eustis, Virginia, Oct. 21, 2017. The rig consists of many obstacles that challenge upper body, core and grip strength. (U.S. Air Force photo by Airman 1st Class Tristan Biese)