Tech Sgt. Matt B. Halstead, 94th Civil Engineer Squadron explosive ordnance disposal, performs pushups during a TRX Suspension Training program held March 7, 2015 at Dobbins’ Human Performance Center. TRX is a workout system developed by a U.S. Navy Seal and uses suspension straps and different movements to create a full-body workout . (U.S. Air Force photo/Senior Airman Andrew J. Park)