Every commercial flight that takes off from the United States is currently monitored by a radar-based ground system that has been in place since WWII.

BBC: The futurist: The US�� new air traffic control system

What is ground-based radar telling us about the missiles?

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If operated from a single site (perhaps in Grand Forks, North Dakota) in conjunction with one or more new, ground-based radars and other, existing early-warning radar systems, these weapons would have the ability to provide some protection to most of the continental United States.

CENTERFORSECURITYPOLICY: Center for Security Policy | Christopher-Perry Join The Debate On Missile Defense: Will The House Defend Clinton��s Program �� Or Defend America?

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.

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