buoy he can use to brace buford as he brings him to shore. >> i need a brig! >> but authorities don't seem to understand. >> i gave him a second look and i noticed that now his lips were getting blue and i knew at that point it's -- you have to make a decision. >> this is a very difficult decision for couples to make. to prevent the spread of aids and other diseases, modern rescue crews carry plastic equipment so they can give emergency breathing without direct mouth-to-mouth contact, part of what's called universal precautions. >> i knew that it was probably going to be a couple minutes before i could get him to shore. >> he's trying to give him mouth to mouth. >> that boy is good. >> now finally, help is on the way. but it's not a policeman or fireman. like garrett, it's just another person who was out in the park that day. >> when he went under water, the clock's ticking instantly. and that's why i went in the water. >> steven lloyd is a 46-year-old registered nurse, but unlike