Congrats to your youngest!
I did four years USAF - Avionics Tech at Tyndall AFB, Florida - 115 miles from home! Would have reupped but they threatened to keep me at Tyndall even though I was out for eight months! Said my job was 'critical'.... well, the three aircraft I was trained to work on (F-101 Voodoo and F-106 Delta Dart interceptors and the T-33A trainer) were all older than I, and were being taken out of service. Newer and more advanced birds coming online. And I wanted to travel. Panama City Beach gets boring after a few years.
So I reupped into the USN, and saw a lot of the world in six years as an Electronic Tech on an ASW Frigate (small ship). I like to tell folks I was paid to do three years of Caribean Cruises!
I missed Vietnam by a couple years, and got out before the next round of serious 'war games'. Sometimes I miss it. But then I come to my senses - there were too many things I wanted to do that just weren't possible or easy while in the military. But I did enjoy it.
Tell him to keep a good camera handy!