This RKO-Pathe short film produced with the assistance of the United States Air Force is about the construction of the DEW Line, the Distant Early Warming System, a string of radar stations built across Alaska and the Canadian north as part of NORAD, the North American Air Defense Command. These are isolated outposts, many of which are only accessible by air. Buildings, roads and landing strips had to be built from scratch. There's a visit to Barrow Village, Alaska the most northern point of US territory.

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