HII comprises three divisions: Newport News Shipbuilding, Ingalls Shipbuilding, and Technical Solutions. 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. HII’'s Technical Solutions division provides a wide range of professional services through its Fleet Support, Mission Driven Innovative Solutions[clarification needed]/Defense and Federal Solutions[clarification needed], Nuclear and Environmental, and Oil and Gas groups.[9]