Northrop Grumman Corp, an aerospace and defense company, operates globally across four different segments: Aeronautics Systems, Defense Systems, Mission Systems, and Space Systems. Its Aeronautics Systems cater to the United States and international markets, focusing on aircraft systems ranging from high-altitude long-endurance strategic ISR to vertical take-off and landing tactical ISR systems. The Defense Systems segment specializes in the development and production of weapons and mission systems, including integrated battle management systems, munitions and missiles, and propulsion systems. Mission Systems offer cyber, command, control, communications and computers, intelligence, surveillance and reconnaissance systems, as well as advanced communication and network systems. The last segment, Space Systems, provides satellites and payloads, missile defense systems, and launch vehicles. The company, founded in 1939, is headquartered in Falls Church, Virginia.