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Lockheed Martin Corporation is an American aerospace, defense, information security, and technology company with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta in March 1995. It is headquartered in North Bethesda, Maryland, in the Washington, D.C., area. Lockheed Martin employs approximately 110,000 people worldwide as of January 2020.Lockheed Martin is one of the largest companies in the markets where it operates. It is the world's largest defense contractor by revenue for fiscal year 2014.