Air Force Civic Leaders listen as U.S. Air Force Lt. Col. Franklin Marston, 158th Fighter Wing Detachment 1 commander, talks about the capabilities of the F-16 Fighting Falcon during the Air Force Chief of Staff Civic Leader Tour at Langley Air Force Base, Va., Feb. 1, 2012. The 158th FW, Det. 1 mission is to protect the eastern United States against direct threats from foreign aircraft. (U.S. Air Force photo by Staff Sgt. Jeff Nevison/Released)