Huntington Ingalls Industries, Inc. is the largest military shipbuilding company in the United States as well as a provider of professional services to partners in government and industry. HII, ranked No. 375 on the Fortune 500, was formed on 31 March 2011, as a divestiture from Northrop Grumman. HII comprises three divisions: Newport News Shipbuilding in Virginia, Ingalls Shipbuilding in Mississippi, and Mission Technologies. In April 2022, Huntington Ingalls Industries changed its branding name to HII. Wikipedia