Airfield Systems
Airman 1st Class Cassandra Mallory, 28th Communications Squadron airfield systems technician, troubleshoots a radio at Ellsworth Air Force Base, S.D., March 6, 2012. The airfield systems section is responsible for maintaining all radio communications, weather systems, and directional equipment used to guide aircraft during landings. (U.S. Air Force photo by Airman Alystria Maurer/Released)