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What is DEW Line?
Found this PB Notable very interesting. DEW Line? Seems like this needs moar eyes looking at it.
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In honor of #CanadaDay2021 we're spotlighting the historic relationship we share with our Allied parter and friend, Canada. Flag of Canada The DEW line brought our nations even closer during the Cold War.
https://twitter.com/NGA_GEOINT/status/1410712316908167171
Distant Early Warning Line
United States-Canadian military
https://www.britannica.com/technology/Distant-Early-Warning-Line
"Distant Early Warning Line (DEW Line), Cold War communications network, made up of more than 60 manned radar installations and extending about 4,800 km (3,000 miles) from northwestern Alaska to eastern Baffin Island. The network served as a warning system for the United States and Canada that could detect and verify the approach of aircraft or intercontinental ballistic missiles (ICBMs) from the Soviet Union."