In Cuba we don't have a 911. the one thing we do is to do the job ourselves . when we know someone is missing we try to find him. we do not swim to shore to find help. If this person is not found, then we look for help. The first 5 minutes are crucial. Meaning that if this person is not found in the first 5 minutes, then is dead for sure and then you can look for help to find the body, not the person. For that reason, I've been meaning to say, knowing that I'll be criticized like Dan was. that i would have thrown the anchor then jumped in the water, and if I hadn't found the person, then I'd call 911. My point is not to criticize, but to set an idea or whatever you want to call it, so that next time we can do better to assist. In this kind of situation you can go down and either tie a rope to the hand or shoot it to save the person. You do not have to go down and bring him up with you because it can result in the death of both. So, i apologize if I unnerve anyone, but i understand why Dan asked the question. It's just about the first 5 minutes.