Huntington Ingalls Industries, Inc. engages in designing, building, overhauling, and repairing military ships in the United States. It operates through three segments: Ingalls, Newport News, and Mission Technologies. The company is involved in the design and construction of non-nuclear ships comprising amphibious assault ships; expeditionary warfare ships; surface combatants; and national security cutters for the U.S. Navy and U.S. Coast Guard. It also provides nuclear-powered ships, such as aircraft carriers and submarines, as well as refueling and overhaul, and inactivation services of nuclear-powered aircraft carriers. In addition, the company offers naval nuclear support services, including fleet services comprising design, construction, maintenance, and disposal activities for in-service the U.S. Navy nuclear ships; and maintenance services on nuclear reactor prototypes. Further, it provides life-cycle sustainment services to the U.S. Navy fleet and other maritime customers; high-end information technology and mission-based solutions for Department of Defense (DoD), intelligence, and federal civilian customers; nuclear management and operations and environmental management services for the Department of Energy, DoD, state and local governments, and private sector companies; fleet sustainment; nuclear and environmental services; and unmanned systems. Huntington Ingalls Industries, Inc. was founded in 1886 and is headquartered in Newport News, Virginia.