Staff Sgt. Eugene Healey, 28th Maintenance Group crew chief, inspects hoses inside a B-1 bomber loading bay during the Global Strike Challenge at Ellsworth Air Force Base S.D., Aug. 20, 2015. The competition is the world's premier bomber, Intercontinental Ballistic Missile and security force challenge between units from Air Force Global Strike Command, Air Combat Command, Air Force Materiel Command, Air Force Reserve Command and the Air National Guard. (U.S. Air Force photo by Airman 1st Class James L. Miller/Released)