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'''Space Detection and Tracking System,''' or SPADATS, was built in 1960 to integrate defense systems built by different branches of the [[United States Armed Forces]] and was placed [[North American Aerospace Defense Command]] (NORAD). The [[United States Air Force|Air Force]] had a program called [[Project Space Track|Spacetrack]], which was a network of space-probing cameras and radar. The [[United States Navy|Navy]] had a system called SPASUR, a space surveillance system that was "an electronic fence" the protected the southern United States.<ref name="Sloan2005">{{cite book|author=Elinor C. Sloan|title=Security and Defence in the Terrorist Era|url=http://books.google.com/books?id=evldtppA72AC&pg=PA194|date=28 October 2005|publisher=McGill-Queen's Press - MQUP|isbn=978-0-7735-7320-8|page=194}}</ref>
==References==
{{reflist}}
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