A Ballistic Missile Defense System (BMDS) is designed to detect, track, and intercept incoming ballistic missiles before they can reach their targets. These systems use a combination of radar, satellites, and interceptor missiles to identify threats and neutralize them in the atmosphere or during their flight path. BMDS is crucial for national security, as it helps protect against potential missile attacks from hostile nations or groups. Various countries, including the United States, have developed their own BMDS, which may include ground-based interceptors, sea-based systems, and advanced radar technologies to enhance defense capabilities.