The Prism missile is a long-range ballistic missile developed by Lockheed Martin for the U.S. Army, characterized by its ability to hit targets with exceptional accuracy at distances greater than 499 kilometers. It employs both an inertial navigation system—which allows it to track its position and trajectory accurately even when GPS signals are weak or disrupted—and a Global Positioning System (GPS) for precise targeting of sensitive and moving targets. This advanced technology marks a significant step in missile precision capabilities for modern warfare.