The North Warning System (NWS) is a joint United States and Canadian radar system for the atmospheric air defense of North America. It provides surveillance of airspace from potential incursions or attacks from across North America's polar region. It replaced the Distant Early Warning Line system in the late 1980s.
Read more about North Warning System: Overview, History, Site Remediation, Stations, Distant Early Warning Line Sites Not Included
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—Ronald Reagan (b. 1911)
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—Noam Chomsky (b. 1928)