Airman 1st Class Dillion Rickman, 28th Logistics Readiness Squadron vehicle and vehicular equipment mechanic, changes oil in a government vehicle during routine maintenance in the vehicle maintenance shop at Ellsworth Air Force Base, S.D., April 24, 2012. Vehicle maintenance is responsible for regular up keep of Ellsworth’s entire government vehicle fleet, including routine work and preventative maintenance. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)