PAN past United States route marker "Oklahoma US 64". TRAVELLING SHOT along sandy field, prairie. TILT DOWN United States and state flags to customs officials inspecting combines. Shot of similar custom station on Canadian side, men entering post, coming out, shaking hands with customs official. Shot of truck hauling combine into Canadian customs station. Shot of official examining personal effects of harvesters, chatting with them. PAN from prairie to highway, two combines moving past, oil refinery in the distance. TRAVELLING SHOT past signs "Oklahoma State Line", "Kansas State Line", hold on "Kansas Port of Entry". Shot of customs inspector looking over Canadian truck, combines. Two PANs of line of trucks, combines, tent trailers.