Senior Airman Luis Peralta, 28th Communications Squadron client systems technician, reinstalls a computer’s random access memory cards during scheduled maintenance at Ellsworth Air Force Base, S.D., April 17, 2013. Client systems technicians keep the base’s computer network and systems operating by quickly responding to and resolving computer issues. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)