Drug smugglers are using makeshift cannons (shown above) to shoot packages of marijuana across the border fence into the United States, according to the police in Baja, CA. The large improvised gun, which is made of PVC pipe and powered by an air compressor hooked up to a car engine, can apparently blast packages weighing up to 13 kilograms. Not surprisingly, similar techniques in moving drugs have been observed before in Arizona, one involving a catapult-like device in January 2011 and another involving a canister cannon in December later that year.