I used to be in charge of a singles group in a small city. The founder was out of town and I was taking over until he returned.
I would send out emails and had people helping to plan events, mostly get-togethers at local bars or outdoor activities like hiking.
Because I was the one who had all the nametags and markers, I would greet all the new people.
One evening there was a new guy, fairly tall, maybe in his mid-thirties. I did the usual, said hello, made some introductions. He seemed nice and clean-cut, always a plus in this group. His name was added to the mailing list.
A couple of weeks later, there was an article in the paper about a death at a nearby race. It was about this new guy. I recognised his name.
He had finished the race, and then collapsed. Died. It was the most tragic thing I ever heard of while I ran that group.