Clayton King, Shamrock Enterprise laborer, sets up a water sprinkler July 20, 2011 at Ellsworth AFB, S.D. Shamrock has been subcontracted to Xeriscape 17 high profile areas around the base, which will save the Air Force, and taxpayers, more than $113,000 a year. (U.S. Air Force photo/Tech. Sgt. Nathan Gallahan/Released)