Wiki page about Kris https://en.wikipedia.org/wiki/Kris_Kaspersky
> I hope he recovers, but to say it for the 10,000th time, if anyone tells you you need to cool it and you are being sketch, listen! You were probably sketch long before anyone actually said anything.
Skydiving has some formal rules, both from the FAA and the USPA, but there is a lot more institutional knowledge passed along through informal channels.
Experienced jumpers commonly see something, recognize it as an issue, and talk with the person about it, even without being in a position of authority. If drop zone staff sees something sketchy, they'll talk to the jumper in much the same way. Safety is usually treated as an educational problem, with informed opinions (usually) staying well inside the box of what's permitted by the rules.
If you're a skydiver, listen to your peers. They are an important part of the skydiving safety picture.