Northrop Grumman Corporation operates as an aerospace and defense technology company in the United States, the Asia/Pacific, Europe, and internationally. The company’s Aeronautics Systems segment designs, develops, manufactures, integrates, sustains, and modernizes aircraft systems. This segment also offers unmanned autonomous aircraft systems, including high-altitude long-endurance strategic, and surveillance and reconnaissance systems; and strategic long-range strike aircraft, tactical fighter and air dominance aircraft, and airborne battle management and command and control systems. Its Defense Systems segment designs, develops, integrates, and produces strategic deterrent systems, tactical weapons, and missile defense solutions; and provides sustainment, modernization, and training services for manned and unmanned aircraft and electronics systems.