BAE Systems Plc is a defense, security, and aerospace company. Its largest operations are in the United Kingdom and United States, where its subsidiary, BAE Systems Inc, is one of the six largest suppliers to the US Department of Defense. Other major markets include Australia, India, and Saudi Arabia. The company was formed in1999 by the merger of two British companies, Marconi Electronic Systems, the defense electronics and naval shipbuilding subsidiary of the General Electric Company PLC,and British Aerospace, an aircraft, munitions, and naval systems manufacturer. BAE Systems Rokar International Ltd is BAE's Israeli subsidiary and specializes in the development, production, maintenance, and technical support of electronic counter-measure dispensing systems, GPS navigation guidance systems, and precision guidance systems.