Missile defense systems are technologies designed to detect, track, and intercept incoming missiles, particularly those that are ballistic in nature. These systems aim to protect a country or region from potential missile attacks by neutralizing threats before they can reach their targets. They often involve a combination of radar, sensors, and interceptor missiles. There are various types of missile defense systems, including Patriot, Aegis, and THAAD. Each system has unique capabilities and is used in different scenarios, such as defending against short-range or long-range missiles. These systems play a crucial role in national security and military strategy.