Senior Airman Zachary Saunders, 744 Communication Squadron radio frequency technician, examines a ground-to-air radio receiver at the 744 CS building at Joint Base Andrews, Md., on Aug. 26, 2014. The 744 CS is responsible for land-to-mobile communications, the giant voice and public address system. (U.S. Air Force photo/Airman 1st Class Joshua R. M. Dewberry)