The Terminal High Altitude Area Defense (THAAD) is a missile defense system designed to intercept and destroy short, medium, and intermediate-range ballistic missiles during their terminal phase of flight. It uses advanced radar and interceptors to track and neutralize threats, providing protection for military bases and populated areas. THAAD is part of a broader defense strategy that includes other systems like the Aegis Ballistic Missile Defense and the Patriot missile system. Developed by Lockheed Martin, THAAD has been deployed in various locations, including South Korea and Guam, to enhance regional security against missile threats.