Aerial views of snow tractors towing prefabricated buildings & encampments.
American commentary. 3,000 mile radar warning network - Dew line. 5,000 men are working to forge an electronic chain to give North America 6 hours warning of enemy attack.
Aerial views, flying over Arctic wastes. Aerial, radar camp at Baffin Bay. Various shots of encampments being constructed and aerial views of snow tractors towing prefabricated buildings.