An F-16 Fighting Falcon, piloted by 158th Fighter Wing F-16 Pilot Maj. Nathan Graber, takes off from Langley Air Force Base, Va. Aug. 1, 2011. Airmen from the 158th Fighter Wing, an Air National Guard Unit from Vermont, remain on standby at Langley to provide the technical skills and support needed to immediately launch F-16s in support of homeland security. (U.S. Air Force photo by Staff Sgt. Logan Tuttle/Released)