You are right...time catches up with us all....the great equalizer.
I had 2 photo chiefs while I was with RVAH-11, PHC Mike Keim, and PHC Bob Orin. Both were really knowledgable, but as different as night and day. PHC Keim would take you out behind the wood shed, literally. PHC Orin was a studious type. If you figure that was 1972-72, both of them were around 40 years old then, so that would put them between 75-80 years old, now. I also served with Arther Jorgensen, who became a PHC later, and PH1 Art Bradway...don't know if he made chief or not. Most of us younger guys did one tour and ETS'd. It wasn't until many years later that I came to realize just how much we had been taught by those guys. Too soon old, too late smart.