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. As part of the U.S. Air Force''s Integration Support Contract (ISC), BAE Systems provides advisory and assistance services in the areas of engineering, logistics, management, scientific analysis, and other subject matter expertise to augment and optimize management of the Sentinel ICBM Prime Contractor.