First aid and trauma care isn’t just an “OpErAtOr” thing. It’s a life skill that often time isn’t even used for yourself.
whether it’s work related accidents, saw cuts power tools etc. or it’s walking into a situation out in the world where someone has been injured; car accident, robbery, accidental or intentional discharge of a firearm, gunshot wound etc you could be the difference between life and death for that person.
certain injuries require specific care, so plan ahead as best you can with where you’re going, what you’re going to be doing. Make a risk assessment and bring what kit you can to be handle that potential risk.
see guys all the time carrying a firearm, and spare mags, knives etc because the potential for a violent encounter is enough to warrant carrying a weapon. If you’re preparing to be in a gun/knife fight you had better be prepared to sustain a gun/knife wound and even though you may have won that fight, you need to be able to survive the outcome yourself to make it all worthwhile
there’s a plethora of combat experience on the battle field with trauma care that has helped us back home learn what works, what’s worth bringing, and how to use it.