Hi Alan, Actually I'm not trying to do photography as a profession. I do what's laughingly described as "fine art photography" and make enough gallery sales to puff up my ego sometimes. But what I did for 30 years after I retired from the USAF in 1977 was software engineering, which I loved almost as much as photography. I did some commercial photography on the side back in the sixties -- portraits, a few weddings, etc., but I found I hated doing that kind of thing. Weddings were the worst. What the bride's mother invariably wanted was pictures she recognized as "wedding pictures:" in other words the worst kind of clichés.
Congrats on your military career. I enjoyed mine, even though I went to war three times and always found war not really to my liking. But the problem-solving involved always was fascinating.