Of the 3 , I never got a chance to go to the schools (Halo, Scuba,) if there was a school for the 3d I didn't get to that one either, however, I did some OJT and developed a "taste" for it.
Seriously, to do scuba has always been a dream of mine. Next October I am going to take a course with Mr. Diver at Sharm-el Sheik, Egypt. Hopefully, I will then be 2 qualified.
Back to the mustache thing. I grew my first while at CCN and kept it for several years. Then someone said it made me look sad all the time (the drooping ends) and I shaved it off. I asked my current muff diving partner if I should grow it again, she gave a definite NO!!