I try to avoid criticizing rangers. It just doesn't seem like something that will end well.

One of the rangers fainted on us while we were gelding his stallion-he wasn't prepared for the old man (a veterinarian) coming out from under with blood up to his elbows. The ranger was big, so his horse was big (maybe 18 hands), and he had been holding the halter. When he fainted, the horse escaped (gelding of horses was done under local anesthesia and light sedation) half gelded and bleeding, and cantered away. We rolled the ranger out of the way, recaptured the horse, re-sedated, and completed the procedure. Toward the end of the procedure, it became apparent that the old man had over-sedated slightly, and the horse began to fall over. I inquired of the old man what he wished me and my brother to do: he indicated that we should hold the horse up. Laid end to end, my brother and I were 12.5 feet long and weighed a quarter ton. The horse was 72 inches at the withers and weighed maybe half a ton. Naturally, the old man assumed that we could prop the horse up. We didn't know any better, so we held him up long enough for the old man to give him a shot of amphetamine, after which he perked up and cantered off.
The horse was pretty tough: I know I would not be cantering anywhere after being half gelded. The ranger rode the horse, suggesting that the ranger was tougher than the horse.

We did not criticize the ranger for fainting.