If worse came to worse and I had to leave the house, this would probably be one of the things I would throw in the car just because it filters treated and untreated water, so if I was camping outdoors and unsure of the water, I could easily filter large amounts of water. Of course, some would prefer to use a Lifestraw or Sawyer filter, but they are small devices that are only really suitable for hikers or survivalists who are expecting to travel on foot for long distances.
Personal defense items – such as rifles and heavy firearms – are going to be increasinly hard to manage the farther you move from steady supplies.  Ironically, it’s firearms that help acquire more food, provide personal protection, and deter others from attacking.  In a SHTF scenario, heavy armament is only good within fortified areas.  If you want to stay highly mobile, switch down to a .22LR polymer rifle such as the Savage survival rifle or similar.  Lightweight, collapsible, and perfect for hunting game.  Loaded with subsonic rounds, it can also be a lot more efficient than heading off a target with a loud 30-06.
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