HII | 79,714 followers on LinkedIn. In Service of the Nation, Each Other and You | We serve those who protect our freedom. Our 44,000-strong team builds the world’s most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. HII’s diverse workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.