Lockheed Corporation was an American aerospace and defense company founded in 1912. It became known for its innovative aircraft designs and played a significant role in military and commercial aviation. The company was involved in the development of various aircraft, including the famous Lockheed SR-71 Blackbird, a reconnaissance aircraft known for its speed and altitude capabilities. In 1995, Lockheed Corporation merged with Martin Marietta to form Lockheed Martin, which is now one of the largest defense contractors in the world. Lockheed Martin continues to focus on advanced technology and systems for military and civilian applications, including space exploration and cybersecurity.