U.S. Air Force Staff Sgt. Paris Roberts, Air Combat Command Public Affairs knowledge operations manager, performs a front squat at the TeamGrit CrossFit competition in Hampton, Va., Jan. 17, 2015. This heat involved a timed competition performing twelve front squats, bear crawling and sprinting. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)(Photo was cropped and levels were changed)