The course I took was so long ago that I don't remember where it was. They taught us the brake was not a parking brake.. now I won't even take a step without setting it. That was also before the days of inertia brakes.What was the training program you took?
We did learn about spring poles, however. A few years later when I was doing R/W maintenance the two foremen would drop "danger trees" into the woods, then send me in to cut the spring poles and buck the tree. I was never sure if it was because I could do it without getting hurt; or if they just wanted to get rid of me.
One if the scariest things I've seen is somebody running a saw left handed. In the event of a kickback, the chain is aimed right at your face. I do a lot of things left handed including write; luckily though I cut right-handed.It's much harder to be safe when you're left-handed. I've never seen a left-handed chainsaw yet. Cutting cross handed like I do makes the saw much more dangerous. My left hand is on the throttle and my right holds the bar by the brake. Lefties are 5X more likely to die in industrial accidents, usually because the tools they use aren't designed with their safety in mind!