
U.S. and Japan to Co-Develop Hypersonic Glide Phase Interceptor
The United States and Japan have signed a formal agreement to jointly develop an advanced interceptor system designed to defeat hypersonic missile threats during the glide phase of flight. The Glide Phase Interceptor (GPI) cooperative project arrangement was announced on May 15th by the U.S. Missile Defense Agency and Japanese Defense Ministry. According to the agreement, Japan will lead development of the rocket motors and propulsion components for GPI, while the U.S. Missile Defense Agency takes the overall system lead.




