Before Holmes started a shooting spree in the Aurora movie theater, he rigged his apartment full of booby traps. Some traps consisted of homemade napalm, which he made by combining gasoline and melted styrofoam; a highly flammable substance. Not only that, he also had thermite, gasoline, magnesium ribbon, wires, ammonia chloride, smokeless gun powder, rifle bullets, a remote controlled car toy and a boom box. A specific booby trap that required chemicals was a trap that would be triggered with a fishing line tripwire. Tripping the wire would cause a thermos of glycerin into a pan of potassium permanganate. This reaction triggers a flammable substance and would cause a fire, triggering the other chemicals that he has lying around his apartment.
