Denica Obis, a U.S. Air Force Junior Reserve Officers' Training Corps cadet, hangs onto the monkey bars as teammates cheer her on during the obstacle course challenge at Fort Eustis, Va., June 26, 2013. Fort Eustis offers two different obstacle courses for use by Service members and civilians with permission from Range Control. (U.S. Air Force photo by Staff Sgt. Dana Hill/Released)