General Dynamics Corporation operates as an aerospace and defense company worldwide. It operates through four business groups: Aerospace; Combat Systems; Information Systems and Technology; and Marine Systems. The Aerospace group designs, develops, manufactures, and outfits business-jet aircraft; provides aircraft services, such as maintenance, repair, aircraft management, charter, fixed-base operational, and staffing services; and performs aircraft completion services for other original equipment manufacturers. The Combat Systems group is involved in the design, development, production, modernization, and sustainment of combat vehicles, weapons systems, and munitions. This group offers wheeled combat and tactical vehicles; main battle tanks and tracked combat vehicles; armaments; and maintenance and logistics support and sustainment services. The Information Systems and Technology group provides technologies, products, and services that support a range of military, federal/civilian, state, local, and commercial customers. This group offers information technology solutions and mission support services; communication, command-and-control, and computer mission systems; and imagery, signals, and multi-intelligence systems for customers in the defense sector, intelligence and homeland security communities, and the United States allies. The Marine Systems group designs, constructs, and repairs surface ships and submarines for the United States Navy and Jones Act ships for commercial customers. This group offers nuclear-powered surface combatants, auxiliary and combat-logistics ships, and commercial product carriers and containerships; and provides design and engineering support services, as well as overhaul, repair, and lifecycle support services. The company was founded in 1899 and is based in Falls Church, Virginia.