My guard unit had 3 "doctors by day" and full up mission ready guard pilots on the side. Totally separate from the flight surgeon program. Although they went to that school too because none of them had any motivation in life. They were not allowed to do both. For them, it was one or the other. They all did it a bit differently but all were flying fighters at some point during their med school and residency. It's tough to deal with the bottom of the gene pool!

The flight surgeon flight program in the AF is basically a familiarization and then all flying in the squadron is done as a voyeur.