High Quality Content by WIKIPEDIA articles! The United States Air Force Ballistic Missile Early Warning System (BMEWS) was the first operational ballistic missile detection radar. The original system was built in 1959 and could provide long-range warning of a ballistic missile attack over the polar region of the Northern Hemisphere. They also provided satellite tracking data. The three installations are: Site I- A United States Air Force facility at Thule Air Base, Greenland, (76.569°N 68.318°W) operated by the 12th Space Warning Squadron. Site II - A second USAF facility at Clear Air Force Station, Alaska, (64°17?19?N 149°11?22?W). Site III - A Royal Air Force facility of Fylingdales, in the United Kingdom (54.3616°N 0.6697°W)

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