Retired Air Force, did you ever do anything
I was Naval Aviation F/A- 18 Squadron my first four years before cross decking to the Submarine Force. On the flight deck USS Coral Sea when we bombed Libya in 86'. Red flag (Air Force event) was fun, one year no rooms in the barracks, so the good folks at Nellis put us up at Circus Circus, fun times!
The Innova Air Force symbol/stamp is intended for Innova only and has no reference with The U.S Air Force. Anybody questioning wearing the Innova symbol is clueless, so wear it. Yes, support your military with symbols on clothing.
What are sweet looking Disc Stamps are those with the insignia of a branch of the military, and the puddy navy The Coast Guard. There's a local who customizes this type of disc among other custom disc. Every once in a while, I'll see them in a local PIAS and they go quickly since the Norfolk area is primarily military. No harm if non-military purchases one. Every once in a while, the artist who also plays, offers his services on a local facebook page.