Airmen from the 633rd Communication Squadron sit a simulated bunker while wearing their mission orientated protective posture gear after a staged attack during phase II of the combined unit exercise at Raptor Town on Langley Air Force Base Va., Dec. 13, 2012. The exercise was used to prepare the Airmen to the possibility of a real attack, while deployed. (U.S. Air Force photo by Airman Kimberly Nagle/Released)