Heads up, Kartographer!
This demonstrates the wild card in many SHTF events. Though the event is serious, it is is managable until peoples reaction to the event begins to come into play and it is often that reaction that becomes the catalyst that propels a serious event into a SHTF.
I've caught a lot of flack from fellows saying will in my neighborhood we would all pull together and overcome our troubles and I never doubt that in many places that's what would happen. The question is will calm and level heads prevail in enough places to stop the panic from becoming a stampede?
Hat Tip to TEXOKIE for the heads-up.