The whole point of having a 401k is to keep plugging away at it, slowly but surely. That way, the ups and downs affect you less, because of dollar cost averaging. If you're a ways off from retirement, your dollars now buy more shares than they did last year this time.
The expectation is that the market will rebound, and then you will gain quite a bit on what you have invested today.
On the other hand, if shit hits the fan, that money wasn't going to do anything for you anyway.
Precursor to selective enforcement? If you were considering owning a firearm, right the fuck now might be a good time for it. You want to practice with it, know how to clean it, stock up on ammo, all before you "need" it.
Because the moment you think "I should have a gun right now," you're a couple months too late at best.
It's already started.