4th CS aids eyes in the sky
Airman 1st Class Joshua Dishner, 4th Communications Squadron air traffic control radar apprentice, uses a volt meter to check electrical output of a video processor in a GPN-20 airport surveillance radar on Seymour Johnson Air Force Base, N.C., Nov. 5, 2009. The radar is part of the Federal Aviation Administration's national airspace, in order to maintain these standards, the communication specialist perform a weekly check to ensure it is functioning properly. Airman Dishner is originally from Bristol, Tenn. (U.S. Air Force photo/Airman 1st Class Rae Perry)