As most of the forum knows i am very interested in special effects and building things and i was just wondering who does the pyro for the jack is back show? I myself have wanted to explore pyro as a special effects artist and the jack is back show kinda pushed me over the edge and decided to do my own pyro. From my observsations it seems like there using a heavy duty flash pot paired with sonic boom powder or concussion powder....but does anyone know what they really use?