CS of several snow tractors stopped in parking lot of Dorval Airport facing travellers entrance during snowstorm, evening. PAN over outside access ramp to departure gates. ZOOM IN on vehicles arriving, headlights on, PAN over parking lot to equipment parked opposite. Various shots of large machines clearing snow in parking lot. Various shots of cars arriving on first level at departure access ramp, travellers emerging in blowing snow with luggage, hurrying into terminal, vehicles leaving access ramp, driving away in storm. Various shots of runway maintenance crews coming out of terminal, walking to snow-removal machines, starting them up and heading to runways, clearing snow in evening, during storm with gusts of blowing snow, including various shots of airport from runway side, of control tower topped by illuminated letters "Montréal".