US Missile defence Agency video of the June 6, 2010, first launch of the two-stage version of the Ground-Based Interceptor from Vandenberg AFB, California. The Ground-based Missile Defence system now uses a three-stage interceptor, and the two-stage version is being developed by Orbital Sciences to provide additional flexibility. The first flight deployed an exoatmospheric kill vehicle, but did not involve a target intercept.
Orbital's Two-Stage OBV Interceptor Rocket Successfully Launched for Missile Defence Flight Test
Orbital Sciences Corporation announced today that a two-stage configuration of its flight-proven Orbital Boost Vehicle (OBV) was successfully flight-tested earlier today in the Booster Verification Test-1 (BVT-1) mission that originated from Vandenberg Air Force Base (VAFB), CA. Under a contract from The Boeing Company for the Ground-based Midcourse Defence (GMD) system, Orbital developed a two-stage ground-based interceptor (GBI) booster that will provide the Missile Defence Agency (MDA) more flexibility in how it addresses emerging threats to the United States, its deployed troops and allied nations. Largely based on the original three-stage OBV GBI, Orbital designed and tested a two-stage version that could be deployed at current interceptor locations to augment existing capabilities, or at new locations in the United States or abroad to counter threats from particular geographic locations. Read more