is a global security company headquartered at Bethesda, MD, U.S.A. The majority of its business is with the U.S. Department of Defense and the U.S. federal government agencies. is the largest provider of IT services, systems integration, and training to the U.S. Government. The company also provides defense systems and services to international government customers.
Its main operations segments include Aeronautics, covering tactical aircraft, airlift, and aeronautical research and development; Electronic Systems covers missiles and fire control, naval systems, platform integration, simulation and training and energy programs. Other fields of activities include Information Systems & Global Solutions (IS&GS), covering military C4I and federal services, government and commercial IT solutions while space activities complete the lines of business with space launch, commercial satellites, government satellites, and strategic missiles. The company employs about 133,000 people worldwide.