Airman 1st Class Ryan Hall, 28th Operations Support Squadron Airfield Management shift lead, requests permission from the base air traffic control tower to enter the active runway during a foreign object and debris check at Ellsworth Air Force Base, S.D., July 18, 2013. Airfield management Airmen are responsible for maintaining and managing all movements on the airfield. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)