Senior Airman Jeremy Devlin, 158th Fighter Wing crew chief directs Maj. Nathan Graber, 158th Fighter Wing pilot, as he taxis his F-16 Fighting Falcon to a runway at Langley Air Force Base, Va. Aug. 1, 2011. The Airmen are part of an Air National Guard from Vermont known as the “Green Mountain Boys” and remain on alert 365 days a year to provide immediate airpower to the nation’s defense. (U.S. Air Force photo by Staff Sgt. Logan Tuttle/Released)