The air cannon is actually down the walkway. This year, I built a box for the air cannon so it could be put out anywhere in the yard. A big spider rested on top of the box and the actor taunted TOTers passing by to "pet my spider". Of course, once they petted the spider, the actor activated the air cannon. It either got a scream or at least a good laugh out of everyone. The MIB was actually a Monster in a Coffin that was run by the VSA along with the lights and 3-axis skull.