Since the time of the American Revolution, Connecticut has been known as the Arsenal of the Nation, and military and defense spending remains an important source of Connecticut jobs today. As the home of innovators such as P.T. Barnum, Eli Whitney and Charles Goodyear, Connecticut has also enjoyed a longstanding reputation for ingenuity. Both industrial and high-tech manufacturing provide many jobs in Connecticut, though manufacturing employment has fluctuated over the years. The insurance industry is another major employer in CT. In particular, many Hartford jobs are in insurance, and several large firms are located in the city, including Aetna, The Travelers Companies and The Hartford. In the most populous city in the state, Bridgeport, jobs are concentrated mainly in the manufacturing, shipping, trade and service sectors. Fairfield County, which includes the Greater Bridgeport metropolitan area, is home to General Electric, Xerox, Pitney Bowes and other Fortune 500 companies. This area’s large population and proximity to the New York metropolitan area make it a primary location for Connecticut careers in business.