ESPN - Man, machines send squash aflying

ESPN - Man, machines send squash aflying: "The 52,000-pound trebuchet made of steel and red oak traveled here, to the First State, on the bed of a tractor trailer. Its wheels, weighing more than a ton apiece, are cut from an oil drum 10 feet in diameter. Hanging above its base is a swinging counterweight freighted with several tons of railroad track."