I’m with
@Rogerborgon mitigating the less common potential problem
If it’s foreseeable then it needs to be balanced
Back in the day it was mk9s for everything, then mk5s, mk3s, and onto thermobarics and different recipes & card/paper roll pattern for various combinations of fast/slow detonation, volume/flash etc
In paintball the rules have always been that goggles are to be worn as designed with no modification, with chin strap fitted etc. But players put in a second head strap and cut off or don’t fit the chin strap.
The extra head strap if fitted properly tightens the goggle. But if fitted improperly tensions the back of the head, and causing the goggles to fly away if making a superman dive into a tournament snake or running and tripping on a tree root.
Rare and unlikely - but as photographer I’ve watched too many marshals jumping onto a mask less player - and failed to take the photo worrying about if they will land before balls hit
But it took the freak accident of two players to pop around an inflatable, poke barrel into face and flick goggles off. The damage was ‘only’ a circular cut below the eye
This then prompted enforcement of chin straps - for a couple of seasons
It’s been noted that the discussion is about tag rounds but not mortars. The relevant point is the projectile.
What is the risk of that projectile, on its potential flight?
The same stands for a mortar - which isn’t directed, so you can argue that if it’s unobstructed on the way up then it’s ‘fine’ on the way down …… but that’s good to depend on it’s mass …
does it carry a payload?
what could it do to head/face protection?