Northrop Grumman Corporation is a global aerospace and defense company. The Company operates through four segments: Aeronautics Systems, Defense Systems, Mission Systems and Space Systems. Its Aeronautics Systems segment is engaged in the design, development, production, integration and production of autonomous and manned aircraft systems used for battle management, strike and intelligence, surveillance and reconnaissance (ISR). Its Defense Systems segment is engaged in designing, development, production, integration, sustainment and modernization of weapon and mission systems for military and civilian agency customers. Its Mission Systems segment is engaged in providing airborne multifunction sensors; maritime/land systems and sensors; navigation, targeting and survivability, and networked information solutions. Its Space Systems segment is engaged in the design, development, integration, production and operation of space, missile defense, launch and strategic missile systems.