sgtatc

Sergeant (ATC) (SGT (ATC)) Addressed as: Sergeant

warrant_officer

Warrant Officer (ATC) (WO (ATC)) Addressed as: Sir/Ma'am

fsatc

Flight Sergeant (ATC) (FS (ATC)) Addressed as: Flight Sergeant

warrant_officer_tnl_50

Warrant Officer (ATC) (WO (ATC)) (Ex Regular) Addressed as: Sir/Ma'am