Knocking down a shed with an air cannonhttp://www.youtube.com/watch?v=IyAyd4WnvhU&eurl=http%3A%2F%2Fgizmodo.com%2F5326372%2Fgiant-gas%2Bpowered-vortex-cannon-destroying-shed-filmed-at-1300fps%3Fautoplay%3Dtrue&feature=player_embedded by TrevorJ • 17 years ago 4 1 17 years agoYOyoutube.com