Airman Keith Leflore, 28th Security Forces Squadron defender, gives directions to a visitor after authorizing access at Ellsworth Air Force Base, S.D., April 25, 2013. 28th SFS defenders scan identification cards using DBIDS, which immediately reports if an individual is authorized entry to the base. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)