Navajo
Tech. Sgt. David Cowles, right, gives instructions to Airman 1st Class Shane Kilgore during ground clearing operations at St. Michaels Association for Special Education, Window Rock, Ariz., June 7, 2011. The Airman and more than 40 fellow members of the 116th Civil Engineering Squadron, Robins Air Force Base, Ga., performed work for the Navajo Nation as a part of the Innovative Readiness Training program. (U.S. Air Force photo by Master Sgt. Roger Parsons/Released)