Airfield Systems
Senior Airman Blaine Murray, a 19th Operations Support Squadron airfield systems technician, analyzes a tactical air navigation system’s monitor signal Aug. 20, 2014, at Little Rock Air Force Base, Ark. By using an oscilloscope, the airfield systems team can do preventative maintenance and catch any minor issues that could later become serious. (U.S. Air Force photo by Airman 1st Class Scott Poe)