Fast forward a few years and we decided to do some extensive remodeling and an addition. It was my thought that if we were going to basically tear off the back corner of the house, why not put in a safe room. We had a master closet built that is 12x18. It was framed and poured in 6" thick concrete reinforced every 5" with 1/2" rebar on all 4 walls and ceiling. We had a steel security door installed with a manual slide lock on the inside that is sealed similar to a gun safe door.
I now have the majority of our guns and all of our ammo that is not in a gun. My wife and I each keep our EDC in our night stands, cocked and locked. I also have a shotgun by my bed that is loaded but with an empty chamber. Something about racking the slide on a pump shotgun that is chilling

This was all done for my wife that works and stays at home most of the time so if it hit the fan, she has a place to be secure. It is also, somewhat fire resistant as well as a good storm shelter.