My own apology
Experience changes everything. When I wrote this:
Whether your home is 1000 square feet or 4000 square feet it probably doesn't have sweeping views from balconies to lower rooms - even homes with two or three stories don't usually present sweeping panoramas for gunfights - think about the scene in the movie "Scarface" when Al Pacino opens up with his AR and says "Say hello to my little friend". You are NOT in that scene. Not ever.
I was a mere 8 hours away from entering a home that actually had a sweeping view of the first floor from the second. I have been in many large, 2 story homes, some with balconies, but except for a very few mansion-type homes I have seen none have had wide open, sweeping views from an upper floor to a first floor. Last night I entered just such a home in a relatively new, modestly affluent, residential neighborhood in Richardson, Texas. From the outside I'd never have guessed what the entry looked like.
The room you first enter, I guess you have to call it either an entry room or a foyer, was expansive. To the right was a winding staircase leading to the 3 bedroom, 2 bath second story. The master bedroom, office, dining room, living room, kitchen, etc., were all on the first floor. I'd say the home was at least 4000 square feet. Maybe 4500. Everything was wide open and large beyond what I expected.
The point is, if you were upstairs and there was a crash at the door, anyone entering that foyer is in your sweeping field of fire. The master bedroom being downstairs, and actually nobody living upstairs (a case of conspicuous consumption, I guess), the situation would not actually present itself. But it could.
Because it could happen I apologize for my blatant assumption that none of us find ourselves in such situations. If that house had it, others in that neighborhood must have similar construction. Of all the affluent homes I have ever entered that were not actually "mansions", meaning double digit numbers of rooms with dramatic staircases, etc., I have never seen a home so constructed. Very pretty - and a special situation for home defense plans if I ever saw one!
***GRJ***