you mean besides packing a pistol and wearing a bullet proof vest?

I don't think there's any good way to prep for it. You can either choose to live ultimate safety and become a recluse, or go into society and be subject to the whims of those around you. Situational awareness only gets you so far, and all the FAKs, SAKs, pocket tinder and BOBs won't help when EIGHTY people are shot around you.