Regardless of what the idiot-elect is on tape as having said, you never fire from within and you never open the door. If you are geniunely in fear for your life and safety, you call 911 and keep them on the phone, you grab your weapon, and you take up a defensive posture inside your home. If the threat breaches your boundaries, all bets are off because they have now broken the law (you will still have a difficult case if they are unarmed, though). But shooting someone on your porch, or in your yard? To quote Chuck Larabee from Last Man Standing.... "not cool". Also, not legal when you are indoors (behind a boundary) and they are outdoors. If they accost you while you are outside, on your property, minding your own business? That's another story...but "repelling the threatening horde of crying teen girls trying to break down my door"...not really a strong legal defense. The guy screwed up.