Cambodian engineers serving with the National Peacekeeping Force, Mines and Explosive Remnants of War Clearance, Royal Cambodian Armed Forces, pass ceramic roofing tiles through the ceiling of a new school being built in the village of Taing Sia during Angkor Sentinel 2011, May 16. U.S. Army engineers from the 544th Engineer Company, 52nd Eng. Battalion, 555th Eng. Brigade, out of Fort Carson. Colo., worked with the Cambodian Soldiers on the school.