Senior Master Sgt. Eric, 28th Security Forces Squadron operations superintendent, trains Officer Ken Flood and Airman 1st Class Philip Pamer, 28th SFS installation entry controllers, on the Defense Biometric Identification System at the Liberty Gate on Ellsworth Air Force Base, S.D., Feb. 29, 2012. Entry controllers 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 Kate Thornton/Released)