A missile defense system is a technology designed to detect, track, and intercept incoming missiles before they can reach their targets. These systems use various methods, including radar and satellite tracking, to identify threats and launch interceptors to neutralize them. They are often deployed to protect military bases, cities, and critical infrastructure from potential attacks. There are different types of missile defense systems, such as Patriot, THAAD, and Aegis. Each system has unique capabilities and is used in various scenarios, including defending against short-range, medium-range, and long-range missiles. The effectiveness of these systems is crucial for national security.