> Seriously missing in your kit: Communications.

I'd add my vote to that. A CB radio or a ham radio if licensed. I know everyone has cell phones now, but if there's some freak snowstorm or traffic accident, dial tones may not be forthcoming. Here in the San Francisco Bay Area, CBs are pretty much useless, but there are tons of hams on the repeaters, and you can always get hold of someone to pass messages for you.

People may be in dead cell zones, but a handheld radio with a magmount antenna on the roof (or a pocket J-pole) will probably still get the message out.

Cell phones in most urban areas are great, but having only one means of communications is a problem if you're in a survival situation.