section 20502 of this title. 20504. Rights and procedures (a) In general Under regulations prescribed by the Secretary of the Air Force, each officer required under section 20501 of this title to show cause for retention in a space force active status— (1) shall be notified in writing, at least 30 days before the hearing of the officer’s case by a retention board, of the reasons for which the officer is being required to show cause for retention in a space force active status