Northrop Grumman Corporation, headquartered in West Falls Church, Virginia, is an American aerospace and defense company that designs and manufactures systems for aeronautics, defense, missions, and space. The company is the 5th largest contractor of the U.S. federal government; it receives over 2% of total spending by the federal government of the United States on contractors. The company's Aeronautics Systems division develops the B-21 Raider strategic bomber that can drop conventional and thermonuclear weapons, the B-2 Spirit strategic bomber, fuselage and radar production for the Lockheed Martin F-35 Lightning II Joint Strike Fighter and F/A-18 Super Hornet, Grumman E-2 Hawkeye airborne early warning and control, MQ-4C Triton unmanned aerial vehicle, and the NATO Alliance Ground Surveillance Force. The company's defense systems division designs the modernization of the intercontinental ballistic missile system including the LGM-35 Sentinel, the Integrated Air and Missile Defense Battle Command System, Vinnell training, and the M1156 precision guidance kit. Wikipedia