Indoors or out, I won't be neutralizing any enemy sentries, scouts, troops, or spies, so I don't need anything "tactical" the S.F. wanna-bees and mall ninja would go for.
Since all my knives are quite capable of doing whatever I need a knife to do out in the sticks and the more distant boonies, I'll just keep my normal EDC carry:
Buck 110 and a two blade slipjoint folding hunter on my belt.
"Demo Knife" and a stockman in my pocket.
On the off-chance I'll need a fixed blade, I guess I could add a Mora Number 1, in my boot or sock.
I'd probably add my compact 1911 (.45 ACP) in a shoulder holster.
I doubt WW3 will be fought on our soil. All of our potential enemies know that there are more armed civilians in the USA than there are troops.
They also know that those citizens who do not possess a firearm has a bow, crossbow, or some other "obsolete" weapon.
They are also aware that hunting is a popular sport, and if a civilian can sneak up on a deer or grizzly, they can just as easy sneak up on their troops.
All our potential enemies know they may well defeat the military, but they would never defeat the population on their homeland ground.