U.S. Strategic Command’s Jessi McCain from Fit2Fight, a CrossFit gym in Omaha, performs American kettle bell swings for her team, Fit2Fight C, during last year’s TactFit Games at the Offutt Field House, Offutt Air Force Base, Neb. (U.S. Air Force Photo by 2nd Lt. Carly A. Costello/Released)