Eleven monster Macks equipped with 600 hp diesel engines, 5-foot-tall tires and 5,500-gallon fuel tanks carried the personnel and equipment to inside the Arctic Circle to construct the DEW Line defense project in 1956.
Temperatures were as low as -65 degrees as truckers drove in 12-hour shifts and then slept, ate and relaxed in 65-foot-long trailers.
The Dew Line was a series of radar stations meant to warn North America of potential attack from bombers of the former U.S.S.R. during the Cold War.