Staff Sgt. Evan Delk, 28th Logistics Readiness Squadron fire truck mechanic, installs a control module during scheduled maintenance on a fire truck at the Fire Department on Ellsworth Air Force Base, S.D., Jan. 14, 2013. The module controls the fire suppression system in the truck which permits Ellsworth fire protection Airmen to successfully manage fires. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)