U.S. Air Force airmen install a fence along the U.S.-Mexico border. U.S. Air Force airmen install a fence along the U.S.-Mexico border east of San Luis, Ariz., on Oct. 3, 2006. The Guardsmen are working in partnership with the U.S. Border Patrol as part of Operation Jump Start. The airmen are assigned to the 188th Fighter Wing Arkansas Air National Guard. SHARE: Download: Full Size (0.11 MB) Credit: VIRIN: 619868-U-NEX55-011.jpg Photo Gallery