Critical preparedness skills

It's been a while since I've talked about specific skills. Let's leave the political crap behind for a bit, shall we?

I realized when thinking about posts, specifically skill related ones, that it might make sense to build out a list of what I consider critical skills, then get your input to expand it. Without further fanfare, here we go (with "brief" explanations/justifications). I'll also list what critical slot they fill

CookingFood - if you can't eat, life without takeout will suck.
Water treatmentWater - easy to pick up, but even more vital than cooking
Fire buildingEnergy - including fire starting
PioneeringShelter - knot-tying and lashing, allows shelter and tool building on the fly
FirearmsSecurity/Food - good to know about even if they don't fit into your security philosophy, if only to handle safely
ArcherySecurity/Food - your standard backup/predecessor to the gun, takes way more time to become proficient

GardeningFood - growing your own assures a constant source, especially if you add greenhouses
Handheld radio basicsCommunication - when there's more than one of you, you need to talk
Knife use and careFood/Shelter/Security - as your most versatile tool, it needs to be in working order
Food and water storageFood/Water - keeping the basics around
Land navigationNavigation - getting around without electronics
First aidBasic Health - from boo-boos to heart attacks
Foot careBasic Health - if you can't walk, you're a sitting duck
Emergency planningGeneral - without planning, it can all fall apart
Mental fitnessBasic Health - keeping your head (and those of your group) together
Leadership/group dynamicsCommunication - even if you aren't a born leader, you need to know how to deal with them and people
Basic hand tool useGeneral - shovels, hammers, screwdrivers, oh my!
SignalingCommunication - getting found or passing on messages without electronics

Let me know what I missed, and maybe what topics you'd like me to expand on sooner than later. No, really, just take a few minutes and comment right below!

Edited for added skills from readers:

Gathering woodEnergy/Shelter - for firewood, pioneering, and tool making
ForagingFood - Non-animal wild nutrition gathering
Hunting/TrappingFood - Animal wild nutrition gathering
Survival hygieneBasic Health - keeping healthy without running water
Alternate medicineBasic Health - getting by when there isn't 'modern' medicine
Tool makingGeneral - fixing broken tools or crafting from scratch
Primitive laundry and dishesBasic Health - cause getting sick during tough times would suck
Preserving foodFood - making what you gather last
Keeping fitBasic Health - being in shape keeps you in shape when you're working harder
RationingFood/Water - how much do you really need?