I think I saw it on someones byline here,"A firearm is like a parachute, you don't need it often but when you do there is nothing that can take it's place".
I like to use the fire insurance analogy, my house isn't on fire, if does burn it is to late get a policy.
I drive defensively to avoid accidents, the other person may not.
I am in good health, each day goes by I may need to use my hospitalization insurance.
There is a Proverb that goes something like" a wise man avoids a pit , the fool stumbles into it"
Best wishes making the best of your 'Teachable moment " , I hope you can get them to share what they have learned from this and save even more lives.