Senior Airman Christopher Shroyer and Staff Sgt. Rafael Medina III work on the navigation system of an A-10C Thunderbolt II aircraft.
U.S. Air Force Senior Airman Christopher Shroyer (left), an avionics journeyman, and Staff Sgt. Rafael Medina III (right), an avionics craftsman, both with the 23rd Aircraft Maintenance Squadron, work on the navigation system of an A-10C Thunderbolt II aircraft at Kandahar Airfield, Afghanistan, on Aug. 8, 2011.