We blew up a mailbox with an M-80 once. We did this at about midnight and it was quite successful, sending the mailbox clear across the street. I didn't plant the device but did supply the cigarette to use as a makeshift timer. I would imagine this is some kind of federal offense but I'm hoping that, since it was about 24 years ago, the statute of limitations has expired. Nowdays, it would probably be considered an act of terrorism.