US Code
CHAPTER 809— BUREAUS; OFFICE OF THE JUDGE ADVOCATE GENERAL
§ 8081. Chief of Naval Personnel; Deputy Chief of Naval Personnel

(a) The Chief of Naval Personnel shall be appointed by the President, by and with the advice and consent of the Senate, for a term of four years, from officers on the active-duty list in the line of the Navy not below the grade of commander.
(b) An officer on the active-duty list in the line of the Navy not below the grade of commander may be detailed as Deputy Chief of Naval Personnel.