I did my first scuba diving training back in 1984. After the initial course I was doing a few dives, but never bought my own gear. Then scuba diving was forgotten.
In 2008 during a trip to Cebu, Philippines I took a new scuba diving course. This time with NAUI.
Again I was a certified scuba diver.
A few months later during a trip to Boracay, Philippines it was time for the Advanced Open Water(AOW) Diver course:
On the next trip to Boracay in 2009, I did my Enriched Air course or Nitrox.
Boracay was nice and during the next visit it was time for 4 more specialty courses and the Rescue diver course.
With a number of dives and 5 specialty courses, the rescue diver course qualified me for my current level as Master Scuba Diver(MSD).