The theoretical shooting began last week in Exercise Sweetbriar, .the joint Canadian-U.S. maneuvers to test North America's defenses against invasion from the Arctic. Across the mile-wide Donjek River, 170 miles south of Dawson, Allied troops fought off a mock invader driving into Canada from Alaska.
It was a brutal battleground. The temperature dipped as low as 52° below zero. Soldiers clad in nearly 25 Ibs. of special Arctic clothing, carrying another 34 Ibs. of special equipment, crawled through waist-deep snow, over hummocks of frozen muskeg. For hundreds of miles on every side stretched trackless pine forests and mountains. Said...