ジェネラル・ダイナミクス・エレクトリック・ボート
There are two major companies in Groton: General Dynamics Electric Boat and Pfizer. The Electric Boat plant on the eastern shore of the Thames River employs 10,500 people in the community. Pfizer is one of the world's largest pharmaceutical companies, and the company maintains a research and development facility in Groton.