[Swimmer]

Actually in the post I put up prior to this one when I said their is nothing than can be done about injuries I should have said even with the best of intentions and many years of training injuries can and will occur regardless of how cqareful a rescuer is. Some people are brittle and one never knows the extent of the injuriy your dealing with at crashes. When I cracked the guys chest plate I repositioned as your suppsoed to do and it didn't crack anymore after that. I have done cpr four or five times and nothing else ever happened. I'm sure their have been instances when a some gargantuan person has done cpr and just obliterated someones chest. Even the biggest and the smallest of people can be trained to effectively perform cpr.