[Untamed]

The three times I played at "pirate" fields (how old is that term?) the police showed up when distant residents heard the repeating popping of the markers. Each time they showed up, knew it for what it was, and advised us (they didnt tell us) that we should find someplace else to play since residents were complaining. We weren't shooting anyone else, and not marking up any private property. The police couldn't make us leave, and it wasn't illegal to play in woods that weren't privately owned. But... they can cite you (give you a ticket) for disturbing the peace if enough residents complain and they keep coming back to warn you to stop.

Go play, then leave when the cops show up. *shrugs* Just don't run when they show up, that makes it look bad.