Photo by Todd SpivakJohn Hunsucker​John Hunsucker is not a medical doctor. This is one of the first points his many critics tend to make.They make it because Hunsucker, who runs Houston-based NASCO (National Aquatic Safety Company), the third-largest lifeguard training organization in the nation, teaches a rescue technique that has been dismissed as useless and even dangerous by seemingly every authority on drowning. Before starting CPR on drown victims, NASCO-trained lifeguards perform the He
