Pyro is usually bought from licensed pyrotechs AFAIK.
I was hearing about one of the Keystone games where they had pyro and it was all bought and setup by a pyrotech.
MOST fields won't allow pyro of any kind, it becomes a safety issue and their insurance most likely doesn't cover it. That being said it's a really stupid idea to use them in the first place as someone pointed out due to died leaves and whatnot.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE