Warrant officers: promotion; selection boards

§ 558. Warrant officers: promotion; selection boards (a) Whenever the Secretary concerned determines that the needs of the service so require, but at least once a year, he shall appoint selection boards to consider permanent regular warrant officers for promotion to permanent regular warrant officer grades. Each board shall be composed of at least five officers of the armed force concerned who hold a permanent regular grade above major or lieutenant commander. 21 (b) No officer may serve on two consecutive boards under this section, if the second board considers any warrant officer who was considered by the first board. (c) The Secretary concerned shall prescribe all other matters relating to the functions and duties of the boards, including the number of members constituting a quorum.