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PO. Petty Officer
PT. Physical Training
Rate. Pay grade of enlisted personnel; ranges from E1 to E9.
Rating: Job specialty of enlisted personnel.
Rank. Pay grade officer personnel; ranges from W1 to W9 for warrant officers and O1-O10 for commissioned officers.
RDC. Recruit Division Commander
R-CPO. Recruit Chief Petty Officer, the recruit in charge of the division when the RDC’s are not present.
SEPS. The barracks for those who are awaiting separation from the Navy.