First:
While we were taping, I realized that I our CFS line-up did look like a bunch of clones.... If I had been thinking diversity, I'd've had one of our female instructors, a minority or two and maybe even that one guy with a pony tail....

..... At least we didn't all wear the same shirt.
Next:
As for "Up!", I got that from an outstanding instructor and friend named Hector Martinez (R.I.P.). He was a Marine, and lead instructor at a combined school run at an Army base. I'm not sure where the use of that word as a standard command started, but I've heard it off and on over the years from guys with diverse backgrounds.... certainly not my invention!
I've never worked with the AMU, but I did see that segment on AG and it was a good one.
-RJP