Water engineering
BALAD AIR BASE, Iraq -- Senior Airmen Antonio Martinez and Juan Reynoso, 332nd Civil Engineer Squadron plumbers, shovel soft sand over new piping here, March 24. The sand will protect and cushion the newly installed pipes in the Air Force housing area from rocks. The pipe infrastructure replacement project is scheduled to be completed by mid-June. Both Airmen are deployed from Peterson Air Force Base, Colo. (U.S. Air Force photo/ Senior Airman Julianne Showalter)