Staff Sgt. Justin McEldowney, 28th Operations Support Squadron aircrew flight equipment technician, performs an operations check on a Combat Survival Evader Locator radio at Ellsworth Air Force Base, S.D., June 25, 2015. The 28th Bomb Wing is the first B-1 unit in the Air Force to use this device, helping to enhance aircrew search and rescue capabilities. (U.S. Air Force photo by Senior Airman Anania Tekurio/Released)