Huntington Ingalls Industries, US

Northrop Grumman Shipbuilding is made up of Northrop Grumman Ship Systems and Northrop Grumman Newport News shipbuilding sectors. It specializes in the design, building, overhauling and repairing of ships for the U.S. Navy. The company builds and refuels nuclear-powered aircraft carriers and submarines. It offers various surface combatants, such as destroyers, cruisers, high-endurance cutters and amphibious assault ships. Northrop Grumman Shipbuilding maintains operations in Virginia, Mississippi, California and Louisiana. Its subsidiaries include Continental Maritime of San Diego and Northrop Grumman Newport News. The company's AMSEC subsidiary provides naval architecture, marine engineering, naval ship systems assessment, maintenance, shipyard industrial engineering and logistics services. It employs a work force of more than 40,000 people. Northrop Grumman Shipbuilding is a part of Northrop Grumman Corporation, which is one of the leading global security companies in the world.