Checking the system
Staff Sgt. JaVonn Stone examines a monitor that displays network functions at the 127th Communications Squadron Network Control Center, June 19, 2010, at Selfridge Air National Guard Base. Stone and other computer specialists in the squadron work as part of a team to ensure that the computer system at Selfridge is reliable and secure. (U.S. Air Force photo by TSgt. Dave Kujawa) (RELEASED)