Only because I do not remember it being mentioned...
Fire as a priority might be an important one to consider since, not only does it provide warmth & some protection, but the smoke & smell might help signal those who are searching for you... "If" they are searching...even within a "72 hour period". Heck, you might be rescued in less than 24 hrs if they see the smoke, or smell it and are looking for ya... You make the right signal of three in a triangle, or a straight line & someone might get ya out in 12 hours or less.. Who knows... Fire might be a good one to put up there in the "priorities" list.
BTW... I think the, " most folks are rescued in 72 hours", is a bit of a "skew" on averages. I think that if you are in a crappy situation, if you don't have a handle on what to do, & what to prioritize to make your survival odds better... You are a "medivac", or not likely to remain among the living.
Additionally... I'm thinking that if you don't know enough to at least dig a hole about a foot or so from a "moving" water source, & let the seep help filter the water, rather than just drinking directly from a
unknown/unproven moving water source like a stream/creek/whatever & then hoping that you are rescued before you can get "medical assistance" for what ever pathogen/parasite/ chemical derivatives/ etc, that create some serious troubles for your digestive tract since ya didn't want to take the time to do at least a lil bit of work to help improve your chances....You are already in a world of crap if it is a survival situation... take a needless risk.. Yup..that's the ticket...
Geeez...
I think Boiling is key for most situations when it comes to water borne crap.... chemicals like farm runoff... well ya gonna have to take your chances.
I've said enough.. I have dealt with gastro-enteritis for about 2 weeks at one time in my life, & it is not a good thing... So..You just drink up that water & hope ya don't get it... Sure fire way to take your life, when ya need water to survive, is to get the Sheeits... You think you are dehydrated? Get some of that "running trots" & you not only have to deal with debilitating cramps & gut ache, but all the dehydration effects...
OOOppps.. I rambled along too long...
Good subject... But thinking about some of the complications of the decisions ya may make in a bad circumstance like a survival situation, might lend itself to some looking for good knowledge & not just the mentality of..
"I'm tough, I can handle it"...<--- Many who thought that way are bones & dust...
I'm curious...I wonder where the leaves blow...