Flame & Fire Special Effects Utilitizing Propane & Natural Gas presented by Andrew Nicholls. This is the last of Andy's three-part series of pyrotechnic special effects. This time he explains designs and functions of flame & fire effects, safety & application, fire marshals & NFPA regulations and then he demonstrates some effects. From torches, to H-burners, to fire bars and cannon demos, he really puts the heat on!