huntington ingalls industries is america's largest military shipbuilding company and a provider of engineering, manufacturing and management services to the nuclear energy, oil and gas markets. for more than a century, hii's newport news and ingalls shipbuilding divisions in virginia and mississippi have built more ships in more ship classes than any other u.s. naval shipbuilder. headquartered in newport news, virginia, hii employs approximately 37,000 people operating both domestically and internationally. divisions: ingalls shipbuilding, newport news shipbuilding subsidiaries: amsec llc, continental maritime san diego (cmsd), newport news industrial, newport news nuclear, newport news energy, stoller newport news nuclear (sn3)