"Getting involved" can be something as subtle as stopping and paying attention, it might be a verbal command or question, might be just a matter of where you position yourself. Being armed doesn't mean you
I carry a gun to protect myself and the people I love from the Monsters that roam the earth. When I’m away from those that mean everything to me, I carry so I can return to them. Are there circumstances where I would intervene to help a stranger? Yes, but such intervention would be on my terms at my pace. I am not going to jump into a situation with gun drawn.