There’s no “could” about it. Can you imagine our CF Congress getting it’s act together enough to determine how to fill the exec branch? This presumes that the normal line of succession is interupted and obscured.
And there will be a awful lot of zombies wandering the streets wondering how they got scammed so badly.
But to your earlier point, it’s always best to be prepared.
I was being optimistic. My folks down here to DC in the mid sixties, just in time for all the good riots. My Spidey Senses have never tingled that much until now.