About BAE Systems Intelligence & Security BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Will perform in rack, cabinet, cable support system, and general telecommunications equipment mounting and terminate coaxial, Cat-6 UTP, multi-mode fiber, single mode fiber, and any other connection required in the support of telecommunications systems.