If you're planning on shooting off some exploding crap tomorrow, it might be a good idea to know what's legal in your state. American Pyro is here to help.
They've created this handy map, so now you know whether it's legal to shoot off those decommissioned military-grade M-80s your Uncle Johnny gave you. They also have a more extensive list of specific laws per state here. Find out if your state rules (Texas, South Carolina) or is lame (Massachusetts, Delaware).