Civilian officer Derrick Jacobs, 633d Security Forces Squadron entry controller, checks identification of personnel before entry onto the base during an Operational Readiness Exercise at Langley Air Force Base, Va., Feb. 26, 2011. The two-day exercise tested the ability of the 633d Air Base Wing, 1st Fighter Wing and 192d Fighter Wing to initially respond to and rapidly deploy for combat operations. (U.S. Air Force photo by Airman 1st Class Racheal Watson/Released)