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Precision Diving represents the efforts of Duane Johnson to promote excellence in dive training. For individuals seeking high quality training, I provide a very rigorous curriculum. I build this program based on my own personal experience in Nitrox, Trimix, wreck, and cave diving.
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By donating the long hose regulator from the mouth in an out of air situation one guarantees that the person most in need of a clean fully functioning regulator is going to get it. The advantage of donating your long hose primary is that you are always ready for this very real possibility. You are, in essence, always prepared for any eventuality rather than maintaining a fixed picture of how things should operate
Tip courtesy of Global Underwater Explorers
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