Other sailors and Coast Guardsmen who have completed the requirements to be assigned a rating and have been accepted by the Navy Personnel Command/Bureau of Naval Personnel (USN) or the Coast Guard Personnel Service Center Command (USCG) as holding that rating (a process called "striking") are called "designated strikers", and are referred to by their full rate and rating in formal communications (i.e., machinist's mate fireman (MMFN), as opposed to simply fireman (FN)), though the rating is often left off in informal communications.