The flamethrower

Pictures courtesy Covina PD Lt. Buchannan, who wrote:

The photographs attached to this e-mail are of the device Suspect
Pardo brought with him to the Knollcrest house. What you see depicted in the photogrpahs is the tank from a compressor where the actual compressor mechanism has been removed. Added on to the compressor tank is another
smaller tank. We believe the smaller tank held the high octane racing
fuel and the larger of the two tanks held compressed air. We believe
Suspect Pardo added plumbing to where he could attach a hose line
with a sprayer on the end. The hose line was consumed in the fire and we have yet to find the sprayer end. In several of the photogrpahs, you can
see the Christmas wrapping paper stuck to the upper tank.