Many years ago, diving of a shuttle boat I had to help a young lady who had surfaced in a state of panic, out of air and overweighted. What was ironic was that she was wearing a Buddy BCD with an emergency cylinder and nevr thought to use it. I did - problem solved. When I asked where her buddy was - answer doing her safety stop. When I tackled her buddy when she surfaced, she said that she had been taught that divers must never, ever miss a safety stop! She knew her buddy was in trouble but felt a safety stop was more important. She certainly got the rough edge of my tongue.