Okay, so S has HTF. You need supplies. You decide to explore some abandoned dwellings. Of course you're armed (well, presumably), so you look like a threat. Is there a way to convey to people that you're there peacefully? Do you arrive on the property with a white flag? Now you're ASSuming it's abandoned. But maybe the residents fostered that look to discourage looters. When you enter the house, do you call out your intentions? Offer assurance that you mean no harm and will leave if occupied? Or do you want to remain quiet and not call attention to yourself? Likewise, what about when others come to your property? Would you blast at anything rummaging through your kitchen, or would you announce your presence? I can see a lot of unneeded incidents because of this. Should us 'good folk' have a code or a signal for this?