WHITEMAN AIR FORCE BASE, Mo. - Crew chiefs assigned to the 509th Aircraft Maintenance Squadron scrub down a B-2 Spirit during a full wash, Aug. 27. A full wash is conducted on a B-2 Spirit every 180 days and consists of three six- to ten-man crews that work around the clock to get the job done within one to two days. (U.S. Air Force photo/Senior Airman Kenny Holston)