Staff Sgt. Gordon Williamson, 28th Civil Engineer Squadron heavy equipment technician, completes paperwork for Christy Wolfe, 28th CES material controls supply technician, after loading a truck with street sweeper parts at the Material Controls warehouse on Ellsworth Air Force Base, S.D., May 8, 2013. Aside from providing Airmen with parts to complete work orders, Material Controls Airmen supply the 28th CES with uniform items unique to their job, such as the 100 percent-cotton uniforms for fire protection Airmen, as well as chemical protection gear and deployment equipment. (U.S. Air Force photo by Senior Airman Kate Maurer/Released)