Airman 1st Class Martin Fernandez, 56th Communication Squadron client system technicians, inspects a cable line for a port installation controller in a server room at the 56th CS building Oct. 22, 2019 at Luke Air Force Base, Ariz. The 56th CS technicians perform these tests while installing new cable systems to determine if ports are active. (U.S. Air Force photo by Senior Airman Caroline Burnett)