Lockheed Martin (NYSE: LMT) is an American global aerospace, defense, security and advanced technology company with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta in March 1995. It is headquartered in Bethesda, Maryland, in the Washington DC area. Lockheed Martin employs 116,000 people worldwide. Marillyn Hewson is the current President and Chief Executive Officer.Lockheed Martin is one of the world's largest defense contractors; in 2009, 74% of Lockheed Martin's revenues came from military sales. It received 7.1% of the funds paid out by the Pentagon.Lockheed Martin operates in five business segments.