Lockheed is an American aerospace and defense company, known for designing and manufacturing advanced aircraft, spacecraft, and military systems. Founded in 1912, it has played a significant role in aviation history, producing iconic aircraft like the Lockheed Martin F-22 Raptor and the Lockheed SR-71 Blackbird. In 1995, Lockheed merged with Martin Marietta to form Lockheed Martin, which is now one of the largest defense contractors in the world. The company focuses on various sectors, including military, space exploration, and cybersecurity, contributing to national security and technological advancements.