Water engineering
Staff Sgt. Steven Lucero compacts sand around water pipes to provide protection from rocks March 24 at Balad Air Base, Iraq. Base plumbers are in the midst of a pipe infrastructure replacement project involving removal of old pipes and replacing them with newer, thicker gauge pipes that will stabilize the systems. Sergeant Lucero is a 332nd Civil Engineer Squadron plumber deployed from Ellsworth Air Force Base, S.D. (U.S. Air Force photo/Senior Airman Julianne Showalter)