General Dynamics Corporation is a defense contractor and business jet manufacturer operating through four segments: Aerospace, Marine Systems, Combat Systems, and Technologies. Its Aerospace segment produces Gulfstream business jets and provides aircraft maintenance and support services worldwide. The Combat Systems segment manufactures land combat vehicles, including the M1 Abrams tank and Stryker armored personnel carrier, along with munitions. The Marine Systems segment builds and services nuclear-powered submarines, destroyers, and support ships for the U.S. Navy. The Technologies segment includes an IT business primarily serving government customers and a mission systems business focused on electronics that deliver command, control, computing, intelligence, surveillance, and reconnaissance capabilities for military applications.