I've never seen anyone mention this. I probably missed it though. Who knows what kind of disaster could happen. Nuclear war, crazies running naked all around. Who knows. So what about having thick slabs of steel to cover all your windows and doors? Maybe even lining your roof to prevent anyone from coming in from above. Could even make some kind of hatch on the windows so you can defend your "fort" too. Possibly even a sniper post in the attic...Like I said, who knows what may happen? Just a thought....