Responsible for establishing and managing contracts to acquire a wide range of technically complex systems for the land, marine and aerospace environments including the acquisition of military and civilian aircraft and ships and related systems, equipment and spare parts; avionics systems including radar and sensors; underwater systems including trainers and simulators; land communications systems and security and information operation systems; and a wide range of technically complex armament systems such as wheeled and tracked armored vehicles, large and small caliber weapons and ammunition. Also, acquired are services such as equipment/systems engineering, repair and overhaul and maintenance services.