Newport News Shipbuilding (NNS), originally Newport News Shipbuilding and Drydock Company (NNS&DD), was the largest privately owned shipyard in the United States prior to being purchased by Northrop Grumman in 2001. Known as Northrop Grumman Newport News (NGNN), and later Northrop Grumman Shipbuilding Newport News (NGSB-NN), the company is located in Newport News, Virginia, and often participates in projects with the Norfolk Naval Shipyard in Portsmouth, Virginia, also located adjacent to Hampton Roads. In March 2011 Newport News Shipbuilding, along with the shipbuilding sector of Northrop Grumman spun-off to form a new company called Huntington Ingalls Industries - Source: Wikipedia
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