Airman 1st Class Jeshurun Marbury (left) and Senior Airman James Owens, 744 Communication Squadron radio frequency technicians, examine an access control point for a land-to-mobile radio trunking system at the 744 CS building here on Aug. 26, 2014. The 744 CS is responsible for LMR communications, the giant voice and public address system. (U.S. Air Force photo/Airman 1st Class Joshua R. M. Dewberry)