Last week I taught another Rescue Diver class. My background as a sheriff’s department dive team member, a national scuba training agency director, and a forensic dive accident investigator serve me well in teaching a very robust Rescue Diver course. During the class orientation I ask students why they want to become rescue certified. The most prominent response is, “to know how to help others in diving emergencies”. However, it is interesting to see students’ responses to the very first lesson of why most diving accidents occur: poor judgment. As we unpack scenario after scenario, poor judgment on behalf of the injured diver becomes obvious. Sometimes my students’ passion for helping others becomes tainted knowing that the accidents could have been prevented if the injured divers had used common sense or followed the rules.