Busy Beavers: various shots of DH Beaver with American markings being towed out of hangar at Toronto's Downsview Airport, being gassed up. AIR TO AIR SHOTs of Beaver airborne. Shots of Beaver landing at Downsview Airport, of pontooned Beaver landing in Toronto Bay, taking off, skyline visible in the distance. GROUND TO AIR SHOTs of Beaver. LS of Beaver spraying field. CU of spraying attachment at work. Interior shot of factory, engine being lowered to fuselage.