CANADA: To Ring the Bell

Canada and the U.S. last week took two important steps to enclose their common backyard. On the Arctic Circle, the DEW line (for Distant Early Warning), a 3,000-mile electronic tripwire, was switched on; for the first time, Canada and the U.S. could feel reasonably secure against a Pearl Harbor attack from the north. At the same time, Washington and Ottawa announced that the two nations' air forces would form a joint command (ADCANUS) for continental defense. ADCANUS will be commanded by Air Force General Earle E. Partridge at the U.S. air-defense center at Colorado Springs, Colo. Its deputy commander...

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