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. Communicating/coordinating with all levels of staff, including Engineering, Production, Testing, Administrative, and Project Management, as well as outside entities, such as government agencies, commands, Original Equipment Manufacturers (OEM), etc.