Staff Sgt. Jack Jenkins places brass ends on both sides of a concrete cylinder sample taken from the new Housing 6 area shoppette foundation Feb. 21 at Balad Air Base, Iraq. The brass ends are part of a strength test machine that is used to compress concrete to determine if it is suitable for use in building foundations or flightline areas. Sergeant Jenkins is a 332nd Civil Engineer Squadron engineering assistant deployed from Ellsworth Air Force Base, S.D. (U.S. Air Force photo/Senior Airman Julianne Showalter)