CS of two mechanics checking engine. ESTABLISHING SHOT of oil refinery at Carcross, Yukon. Shots of machines sweeping runway at northern airfield. Shots of two Royal Canadian Air Force mechanics removing metal covering from plane's engine, of mechanics examining engine. Shot of mechanic checking engine, three RCAF men working in garden in foreground, mountain setting in background. MS of buildings and control tower at airfield in Whitehorse. MS PAN of hangar. FOLLOW SHOT of plane taxiing past hangar and control tower. Shots of United States Air Force gasoline truck pulling up to plane, of man opening back of truck, drawing out hose line.