In my 23 year Air Force career I did indeed work on helicopters. For about 4 years. I moved 9 times.
I worked Structures on the B52H and KC 135A
I also worked Structures/Corrosion Control ( after the career fields combined) on the F16C/CG/CJ
KC 135R/T/RT
B1B
C-130H
A-10A
MH-60G
F-15C/D/E
I finished out my career as LO/Structures on the F-22A from Ship 12 OT tail then worked FF tails all the way to Ship 135 (AK tails until Elmo was ready for them)
A lot of folks didn’t think it was possible to have such a broad range of experience but my career fields didn’t have a shred out, just SEIs, plus 23 years is a long time.