Master Sgt. Jeffrey Roberts of the 386th Expeditionary Civil Engineer Squadron guides a bulldozer while its operator removes rocks from the sand in preparation for laying asphalt at an undisclosed air base in Southwest Asia on Sept. 8, 2010. Sergeant Roberts is deployed from the Illinois Air National Guard's 182nd Civil Engineer Squadron, 182nd Airlift Wing, at General Wayne A. Downing Peoria International Airport, Ill. (U.S. Air Force Photo/Senior Airman Laura Turner)