Nothing will happen, I've been alive long enough to know that every year is the end of the world. Yes an economic crash could happen, yes there's political uncertainty in the US, tell me something new.

And unless you build an actual fortress you won't stand a chance. Bill Burr said better: "all you are doing is gathering supplies for the toughest guy in the block".

Maybe I'm just tired of hearing "gringos" panicking, I'm from a third world country that faced many crisis so I'm no strange to shortages, looting, blackouts and the military patrolling the streets.

My advise is to not own a store, you can definitely lose everything if there's temporary chaos. Other than that if you have enough savings the world will resume soon enough, don't worry :)