This particular senario hasn't been discussed, but we've had plenty of discussion of supplies needed to whether disaster. But if all this crap is going on, our place of refuge isn't far off and supplies would be delivered in advance.
Something else my little survival group have discussed. Only one road in and out where I live. To my right( 300 yards) is a small rock cliff, to my back ( 300 yards) is a ravine, to my front, of you come from there, you will be picked off easily and my left is somewhat vulnerable, but could be made where we could hear you coming....Plus, you gotta come thru a few houses and rough terrain. Most, imo, would attempt to use the road.....and it would be a mistake.
Depending on the situation and our accessment of the threat, we could defend my home and still have avenue to escape if needed. ( we know the area)
It's the nice thing living outside city limits, somewhat in the country. Most chaos will begin outside our area and we could prepare for the inevitable outward movement of violence.
Because of previous discussions, Most involved in the discussion know (somewhat) who is in my little group. We've actually added two families and number around 25, with 15-17 able to fight. Why we have discussed defending a high point, my house, unless we access the threat to be great, in which we will disappear into the woods. If an unorganized mob attempted to steal from is, I believe it would be a mistake. One of the families added (lol) is better armed than the local national guard.