U.S. Air Force Airman 1st Class Damaun Webster, 633rd Force Support Squadron fitness specialist, demonstrates using the broken bars on the Battle Rig at Joint Base Langley-Eustis, Va., Aug. 29, 2017. The Battle Rig consists of many obstacles that use the upper body, core muscles and most of all, grip strength. (U.S. Air Force photo by Airman 1st Class Tristan Biese)