or major general, but before submitting the report to the Secretary of Defense, the Secretary of the Air Force may, under regulations prescribed by the Secretary of the Air Force, adjust the placement of officers as recommended in the report in order to ensure that sufficient number of officers on both sustained and non-sustained duty are promoted to meet the requirements of the Space Force to fill general officer vacancies. (b) Report Whenever the Secretary of the Air Force uses the authority under subsection (a), the Secretary shall submit to the Committees on Armed Services of the Senate and House of Representatives a report informing the committees that the authority has been used and the reason for the use of the authority. III Promotions 20231. Eligibility for consideration for promotion: general rules (a) In general (1) Requirement to be on Space Force officer list An officer is eligible under this chapter for consideration for promotion by a selection board convened under section 14101(a) of this title only if the officer is on the Space Force officer list. (2) Authority to preclude from consideration certain officers based on time of entry on or departure from sustained duty The Secretary of the Air Force— (A) may, by regulation, prescribe a period of time, not to exceed one year, from the time an officer on the Space Force officer list transfers on or off of sustained duty during which the officer shall be ineligible for consideration for promotion