William Hill, 30th Civil Engineer Squadron sign shop manager, measures a speed limit sign before affixing numbers. Aug. 7, 2015, Vandenberg Air Force Base, Calif. The 30th CES sign shop is staffed by a two-man team that maintains more than 7,000 signs of all varieties across Vandenberg property. (U.S. Air Force photo by Airman 1st Class Ian Dudley/Released)