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Lockheed Martin is the world's largest defense contractor and has dominated the Western market for high-end fighter aircraft since it won the F-35 Joint Strike Fighter program in 2001. Aeronautics is Lockheed's largest segment, which derives upward of two-thirds of its revenue from the F-35. Lockheed's remaining segments are rotary and mission systems, mainly encompassing the Sikorsky helicopter business; missiles and fire control, which creates missiles and missile defense systems; and space systems, which produces satellites and receives equity income from the United Launch Alliance joint venture.
Duke Energy is one of the largest us utilities, with regulated utilities in the Carolinas, Indiana, Florida, Ohio, and Kentucky that deliver electricity to 8.2 million customers. Its natural gas utilities serve more than 1.6 million customers.