Welcome. I have been into emergency situation preparedness but in our home we can only prepare just so much due to space and storage limits(we have next to no storage space). I would like to build an addition that would be used for storage of things like food and clothes just for something like this and I would like it to be thick very reinforced walls that could be climate controlled so that we could store things in it for these situations but also use it as a possible safe room if needed. I saw something on TV a few years ago about a man who hand dug a HUGE bunker under his house it took him like 14 years of hand digging and hauling dirt out in a bucket. Then he built the walls out of concrete put in safety measures like self sealing doors that could be tripped in case of an intruder and lock the intruder in a 4X4 room with no where to go no air and no food. It had cameras and the man had over a years supply of every stinkin kind of food imaginable. It was set up so that even if the house blew away it wouldn't affect the bunker underneath. It had individual bedrooms, bathrooms, plumbing, storage area for food and water, a living room and dining room with a kitchen. He had even come up with a way to supply fresh air to the bunker. It was so cool and so well thought out.