I understand that, I spent 25 years as a licensed pyrotechnician with a hazmat drivers license in order to haul the explosives to the shows. I was in a random pool but got tested at least 3 times a year after 911. Needless to say I was as pure as the driven snow all that time. I never really made any money doing it at most 4 or 5 shows a year. The only thing that kept me doing it was the thrill of blowing stuff up. There is no thrill like that of a hand fired 3" shell. You would think that the bigger shells would be better but they do not fit as tight in the mortars and did not come out as hot as the 3"s that fit snug in the guns. I am glad that is all behind me now.