Lockheed Martin is a world leader in systems integration and the development of air and missile defense systems and technologies. These include the world's first successful hit-to-kill intercept with the Homing Overlay Experiment in 1984, the successful demonstration of the first complete weapon system using hit-to-kill technology with the Terminal High Altitude Area Defense (THAAD), as well as the world's first operational hit-to-kill missile defense system, PAC-3. It ... has considerable experience in interceptor systems; kill vehicles; battle management command, control and communications; precision pointing and tracking optics; as well as radar and other sensors that enable signal processing and data fusion. The company makes significant contributions to all 10 major U.S. Missile Defense Systems and participates in several global missile defense partnerships.