Yes, kind of.
I used to surf a lot. I saved a lot of people who never experienced big waves before, and who would often get themselves into trouble. So I came to their rescue if ther was no lifeguard, or if the lifeguard could not get to them in time.
Since I saved so many people and was a regular to one particular beach, a lifeguard trained me to save people the correct way, which I was doing a pretty good job of all on my own without any training.
