We used to have a place on a lake in Indiana and we used to throw 4th of July parties there every year... They had a display in the neighborhood after dark, then after that everyone shot their own off.... The cops would usually show up some time during the night....
Luckily my brother was a volunteer fireman and the cops would tell us to put them away (and wouldn't confiscate them..)... :usflag:
So we would wait 20 - 30 minutes and do more.... :D