The American Air Force demonstrates new smoke screen capable of hiding a whole town in times of war. Chicago, America (USA, U.S.A.).
Item title reads - Hiding a city by smoke screen. Novel experiment probes how Air Force could hide town in time of warfare. Chicago, America (USA, U.S.A.).
M/S pan across aeroplanes with smoke trailing out of the back, they are flying over the sea. Children on swings and people on the beach come into view. L/S as the smoke starts to drift over the houses and people, covering them and concealing them from view. M/S as the smoke drifts away and they come into view again.