Distant Early Warning Line
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What was the Distant Early Warning Line?
The Distant Early Warning (DEW) Line was a Cold War communication network with over 60 radar installations stretching about 4,800 km from northwestern Alaska to eastern Baffin Island. Built by the U.S. military starting in 1954, the DEW Line could detect approaching aircraft or intercontinental ballistic missiles from the Soviet Union, and was manned by U.S. and Canadian military personnel. The DEW Line was coordinated with similar radar detection networks, as well as air and sea patrols and radar stations in Iceland, Great Britain, the Faroe Islands, and Greenland. The DEW Line was replaced by the North Warning System starting in 1985, and many original sites were abandoned or dismantled.
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Why did the United States and Canada build the Distant Early Warning Line?
The United States and Canada constructed the Distant Early Warning Line (DEW Line) to identify potential threats from the Soviet Union during the Cold War. The DEW Line was a network of over 60 radar installations stretching from Alaska to eastern Baffin Island, acting as a warning system against approaching aircraft or intercontinental ballistic missiles (ICBMs). This initiative arose from a study by MIT scientists in the early 1950s, which highlighted North America's vulnerability to Soviet air attacks across the North Pole. Knowing that any air strike would be detected early, the DEW Line served as an effective deterrent against Soviet aggression.
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Where was the Distant Early Warning Line located?
The Distant Early Warning Line (DEW Line) was a Cold War communication network with over 60 manned radar installations stretching approximately 4,800 km (3,000 miles) from northwestern Alaska to eastern Baffin Island.
Constructed by the U.S. military starting in 1954, these installations were manned by U.S. and Canadian military personnel as an extension of the North American Air Defense Command (NORAD). The DEW Line worked with similar radar networks like the Pinetree Early Warning Line and the Mid-Canada Line.
The DEW Line became operational in 1957 and was expanded to include the Aleutian Islands and Greenland by 1961. By 1985, it was replaced by the North Warning System due to aging facilities, improved technologies, and the diminished threat of Soviet aggression.
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How did the DEW Line help protect North America during the Cold War?
During the Cold War, the Distant Early Warning Line (DEW) Line served as a crucial communication network for the United States and Canada. Consisting of over 60 manned radar installations stretching from northwestern Alaska to eastern Baffin Island, it was designed to detect and verify approaching aircraft or intercontinental ballistic missiles (ICBMs) from the Soviet Union.
The DEW Line, coordinated with other radar networks and patrols, acted as a deterrent against Soviet aggression. It ensured that any Soviet air strike would be detected early, allowing the U.S. Air Force to intercept incoming bombers or ICBMs. This also guaranteed a retaliatory response from the U.S. Strategic Air Command.
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What kinds of technology and equipment were used in the DEW Line stations?
The Distant Early Warning Line (DEW Line) was a Cold War communication network with over 60 manned radar installations stretching about 4,800 km from northwestern Alaska to eastern Baffin Island.
Constructed by the U.S. military starting in 1954, these installations were manned by U.S. and Canadian military personnel as an extension of NORAD. Western Electric, controlled by AT&T, facilitated the construction, which included radar sites, roads, towers, airplane hangars, residences, and antennas.
The DEW Line was effective in deterring Soviet aggression during the Cold War. By the mid-1980s, the DEW Line system was replaced by the North Warning System due to aging facilities, improved technologies like AWACS, advanced detection systems, and the diminished threat of Soviet aggression.
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What happened to the Distant Early Warning Line after the Cold War ended?
The Distant Early Warning (DEW) Line was a network of over 60 radar installations used by the United States and Canada during the Cold War to detect incoming Soviet aircraft or missiles.
By the mid-1980s, several factors led to the decline of older early-warning systems like the DEW Line: aging facilities, improved technologies such as the Airborne Warning and Control System (AWACS), advanced detection systems, and the diminished threat of Soviet aggression.
Starting in 1985, the DEW Line system was replaced by the North Warning System, and many of the original DEW Line sites were abandoned or dismantled.
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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.
Those installations, which were constructed by the U.S. military on remote Arctic tundra beginning in 1954, were manned around the clock by U.S. and Canadian military personnel as an extension of the North American Air Defense Command (NORAD). The DEW Line was coordinated with several similar radar detection networks, such as the Pinetree Early Warning Line (which spanned the width of southern Canada near the 49th parallel), the Mid-Canada Line (which spanned the width of Canada at the 55th parallel), and the U.S. Navy’s Atlantic and Pacific Barrier, as well as air and sea patrols and radar stations in Iceland, Great Britain, the Faroe Islands in the North Atlantic, and Greenland. The first phase of the DEW Line became operational on July 31, 1957, and the line was expanded to encapsulate the Aleutian Islands and Greenland by 1961.
The DEW Line and other early-warning installations were effective deterrents against Soviet aggression during the Cold War. The Soviets knew that any air strike launched by them would be detected early enough that the U.S. Air Force could destroy most of their incoming bombers or ICBMs with fighter interceptors. The Soviets also knew that they would suffer considerable retaliation by the U.S. Strategic Air Command, whose airborne nuclear-armed bombers could be expected to survive the first strike.
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The DEW Line grew out of a study in the early 1950s by scientists at the Massachusetts Institute of Technology (MIT), who found that the United States and Canada were vulnerable to a Soviet air attack from across the North Pole. The U.S. communications company Western Electric, which was controlled by AT&T, was awarded the contract to facilitate construction of the line. More than 25,000 workers, many of them subcontractors, built radar sites, roads, towers, airplane hangars, residences, and antennas in the most sparsely populated region of North America.
By the mid-1980s, aging facilities, improved technologies (such as the Airborne Warning and Control System [AWACS]), and advanced detection systems, together with the diminished threat of Soviet aggression in the waning years of the Cold War, led to the demise of older early-warning systems such as the DEW Line. Starting in 1985, the DEW Line system was replaced by the North Warning System, and many of the original DEW Line sites were abandoned or dismantled.