At present, a relatively inexpensive yet highly effective space-based interceptor known as Brilliant Pebbles is within reach.
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Inversely, if the sea based interceptor misses, you could still have a satellite, airborne, and ground based capability.
The Aspin reprogramming would also disrupt the alternative for defending the continental United States: the Ground-Based Interceptor (GBI) program.
The Bush administration deployed the first ground-based interceptor (GBI) in 2004, and had planned to deploy a total of 54.
He has now also delayed funding for ground-based interceptor and radar sites in Poland and the Czech Republic for defense against Iranian missile launchers.
So, for example, having an operational Airborne Laser system and a ground based system give the sea based interceptor more timely and accurate information with which to do its job.
Such systems include all phases of the Phased Adaptive Approach to missile defenses in Europe, the modernization of the Ground-based Midcourse Defense system, and the continued development of the two-stage Ground-Based Interceptor as a technological and strategic hedge.
Particularly noteworthy in this regard, is the decision to all but cancel the promising Brilliant Pebbles space-based interceptor technology at the very moment that the Israeli government and the Western European Union (among others) are recognizing the indispensibility of the sort of boost-phase defense afforded by such a system.
Japan is also investing heavily in Aegis-equipped warships capable of shooting down incoming ballistic missiles as well as land-based Patriot interceptor systems.
Deterrence: The first phase system should be comprised of ground and space-based sensors and interceptor systems.
Interestingly, Mr. Davis has cited the importance of layered or "tiered" defense among his rationales for restarting the canceled E2I secondary interceptor for the single ground-based defense site he advocates -- despite the fact that the E2I system does not represent an independent layer.
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