Canberra old bean:
I select Pedantic Git Mode (PGM) ON. Flying suits/ grobags, call'em what you will are these days,(I note from your profile you are no longer serving) officially No 14 Home Dress, and so can be worn by ANY RANK suitably entitled. Denims/overalls AIN'T uniform.
The defence rests.
PGM selected OFF.
Mind you, overalls must have been useful for you, prophylactic against the grease from those shoulder-borne chips ........
