You know how it is difficult and dangerous to transport weed between borders. It ain’t that tough if the weed is doing the crossing by itself. National Guard troops spied on drug smugglers using the catapult to shoot drugs through the border, and then siezed it. The reports don’t really say this, but we’ll assume the troops then had a great time smooking weed and playing with the catapult. You can see a spy video of the catapult in action here.