Here's what I did a few years ago - Call Lackland AFB, ask for the dog school, they might be able to look the record up. Also, there's a website (can't remember the name) but Google it & there's one that will send you a copy of the record, for a slight fee. That's what I did...

Its a really interesting and informative web for me. I appreciate your work and skills. https://www.roofingburnaby.com