Tony - All the above is truth. Check out the website for the Hawaii Scuba University or Dive Station, previously posted. I'm active duty and looked into this myself.
When did you retire and your family retire? This applies to the Post 9/11 GI Bill. For me, I decided using GI Bill to go to college, getting a better job, then using my future salary to buy dive gear was a much better choice. If someone's sole goal is to be a scuba instructor and will never attend a college class, then using Post 9/11 GI Bill is an option.
Sam