A U.S. Army 128th Aviation Brigade 1st-210th Aviation Regiment Soldier climbs a rope during the Highlander Challenge at Fort Eustis, Va., July 13, 2015. The team challenge involved a 16-part obstacle course, 1-mile litter carry, 0.1-mile HUMVEE push, field exercises and a 3.2-mile ruck march. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)