The OP said, no lights outside, no response to questions/threats. Sure, add TV cameras, add lights, but that wasn't the original scenario. I reckon anybody who can't see any door from inside the house should do something - but that wasn't the original scenario.
Now, I say "never say never". Do I think shooting through a door is good - no. Am I willing to enter a mindset that conditions me to never do it, regardless of the circumstances - no.
The question in my last post has been ignored. OK, I talk rubbish. But here is your possible problem. If this guy has played this game before HE IS NOT GOING TO RUSH IN THROUGH THE DOOR. He will smash the door open, back into the dark a short way (perhaps find cover behind your porch), and then, when he has done a quick assessment he will quarter the pie on the inside of the house. Remember, he is in the dark (OP), you may be back-lit. The only thing you will see is the flash in the dark before you go down.
Of course, it could be a harmless kid
TS537,
I hope it was not really piling on. All of us sometimes think we have something wired. We are really convinced that our plan is perfect. My simple minded amusement is to suggest points that may have been overlooked and to challenge comfortable certainties. For these purposes, does it matter whether I am right or wrong? Does it matter if I am saying what I believe? Not really, the point is to stimulate thought or discussion. I apologize if I gave the impression my argument was some sort of personal attack.