; or (B) is a joint qualified officer. (3) The Secretary of Defense may waive the requirement in paragraph (1) for any selection board of the Space Force. 20213. Notice of convening of selection boards (a) Notice to eligible officers At least 30 days before a selection board is convened under section 20211 of this title to recommend officers in a grade for promotion to the next higher grade, the Secretary of the Air Force shall— (1) notify in writing the officers eligible for consideration for promotion of the date on which the board is to convene and the name and date of rank of the junior officer, and of the senior officer, in the promotion zone as of the date of the notification