U.S. Air Force Senior Airman Chris Kernan, 440th Supply Chain Operations Squadron, stops traffic to check an identification card at Langley Air Force Base, Va., March 14, 2012. As part of the 633rd Security Forces Squadron Augmentee Program, individuals work as entry controllers granting people access onto the base. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)