new subchapters: II Selection Boards 20211. Convening of selection boards (a) In general Whenever the needs of the service require, the Secretary of the Air Force shall convene selection boards to recommend for promotion to the next higher permanent grade officers of the Space Force in each permanent grade from first lieutenant through brigadier general. (b) Exception for officers in grade of first lieutenant Subsection (a) does not require the convening of a selection board in the case of Space Force officers in the permanent grade of first lieutenant when the Secretary of the Air Force recommends for promotion to the grade of captain under section 20238(a)(4)(A) of this title all such officers whom the Secretary finds to be fully qualified for promotion. (c) Selection boards for early retirement or discharge The Secretary of the Air Force may convene selection boards to recommend officers for early retirement under section 20404(a) of this title or for discharge under section 20404(b) of this title. (d) Regulations The convening of selection boards under subsection (a) shall be under regulations prescribed by the Secretary of the Defense. 20212. Composition of selection boards (a) Appointment and composition of boards (1) In general Members of a selection board shall be appointed by the Secretary of Air Force in accordance with this section. A selection board shall consist of five or more officers of the Space Force. Each member of a selection board must be serving in a grade higher than the grade of the officers under consideration by the board, except that no member of a board may be serving in a grade below major. The members of a selection board shall include at least one member serving on sustained duty and at least one member in a space force active status who is not serving on sustained duty. The ratio of the members of a selection board serving on sustained duty to members serving in a space force active status not on sustained duty shall, to the extent practicable, reflect the ratio of officers