The only problems I have with this is that the wife is not armed and the man is not using cover and concealment. Ideally, I would be on a 2nd story window about 3-5 feet from an open window. You should turn off the lights in the room so it's harder for the mob to see you. If the mob breaches your property its best to deploy pepper spray grenades so you don't get arrested for shooting the miscreants. If they still advance and meets the conditions in image 2, I would engage the loudest asshole first.
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Why you engage the loudest asshole: