Stupid bag / nomex jacket question:
Every officer I've seen in a flight suit has worn rank insignia on the shoulder. Normal. Now, does this apply to the nomex jacket as well? I think I've accidentally blown off a few officers who lacked the shoulder insignia. Is shoulder rank insignia usually worn on the nomex jacket or is it a matter of personal preference?
Tip: check the insignia on their cover

Or if on the flight line, just say hello anyways
), and look older than 25 (otherwise could be a recent winger), then just throw it up. I'd rather embarass myself for saluting a JG or 1stLT (hey, they're still 1 above!) than walking by an O-3/4 with a "hello".