The S-125, also known as the NATO reporting name "SA-3 Goa," is a Soviet-designed surface-to-air missile system developed in the 1950s. It is primarily used for medium-range air defense against aircraft and is capable of engaging targets at altitudes up to 18,000 meters. The system employs a mobile launcher and can be deployed quickly in various terrains. The S-125 utilizes radar for target acquisition and tracking, allowing it to effectively intercept enemy aircraft. It has been widely exported and used by several countries, contributing to its reputation as a reliable air defense system during the Cold War and beyond.