Defenders ensure security at Shaw
U.S. Air Force Senior Airman Shantel Hendricks, 20th Security Force Squadron patrolman, scans an identification card of incoming personnel, Shaw Air Force Base, S.C., Nov. 12, 2013. Before entering the base, drivers must present an acceptable identification card to entry controllers. (U.S. Air Force photo by Airman 1st Class Ashley L. Gardner/Released)