Anyway, I was kind of scared about these rescue courses but in the end they ended up being really interesting and even fun. My instructor was a woman from the US (Maryland). Her name was Allison and she was really fantastic. She knew her shit, took it seriously, but also made the courses fun. It's getting towards low season here so it only ended up being me and one other girl from Germany in the class, which was kind of nice.
We learned things like CPR, how to administer oxygen, use a defibrillator, calm a panicked diver under water and at the surface, take care of an unconscious diver under water and at the surface, how to control a diver bolting for the surface, run search patterns for a missing diver, and so much more. We worked through real scenarios where DM trainees acted like divers in trouble. We even had to carry one of them up a ladder onto the boat. Not easy! (poor Michelle, we dropped her more than once). I ended up passing both written exams with only one wrong answer!
Like I said, it was all really interesting, but I really hope I will never have to use any of this stuff.