I was one to an extent. The college I started out at was near the range. I had an 0800 class, but I'd get up extra early to be at the range when the sun came up. First time I did this there were 5 to 8 guys ranging from my dad's age to my grandfather's age out there with a camp stove making coffee, bacon, eggs, etc. I grabbed my 22, picked a bench and began firing my single shot.
The next day, same thing, except after 2 or 3 rounds, one of the guys came over and informed me there would be no shooting. I was welcome to join them for coffee and breakfast, but they were having their morning "meeting", which was coffee, breakfast, and cleaning up the range. I guess after seeing me two mornings in a row they decided I wasn't going to get in their way again. Now, this is a state owned public range. They can't exactly stop me from shooting, but I wasn't about to argue with guys doing a good deed.
Within a few years, the range had some serious improvements done to it with State money. I remain convinced that guys like this are the reason the improvements were done. Free help to keep the range nice means more finds available for improvements.
I made it a habit to continue going out there early and picking up the trash with those guys. I'd go back after my 2 hour class and they were all still there, shooting this time. I only had my single shot 22, but at the time ammo was cheap and you had the chance to shoot nearly everyone's gun out there. I still practice that even though it costs a lot more. Sometimes you can really put a smile on a kid's face letting him shoot your 44 Mag or a vet fire your Garand.