The Missile Defense Agency has successfully demonstrated a booster rocket that is central to the national missile defense system the Bush administration plans to field later this year, MDA said today. The rocket, which carried a dummy interceptor payload, flew a simulated intercept mission last night over the central Pacific Ocean, the agency said. This was the second successful flight for the Orbital Sciences-built rocket, which could be the only booster MDA has available when the initial missile defense system...
