Northrop Grumman Corp is a diversified company which is aligned in four operating sectors, which also comprise our reportable segments namely Aeronautics Systems, Defense Systems, Mission Systems and Space Systems. The aerospace segment designs and builds military aircraft, including the F-35, Global Hawk drones, and the B-21 bomber. Defense systems develops artillery, missile systems, and missile defense technologies. Mission systems focuses on radar, navigation, and communication systems, while space systems manufactures satellites, sensors, and rocket motors.