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. The Platforms & Services (P&S) sector under BAE Systems, Inc does the big stuff: the armored combat vehicles, naval guns, missile launchers, and naval ship repair.