; or (2) issue a general written notice to the Space Force regarding the convening of the board which shall include the convening date of the board 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. (b) Communication from officers An officer eligible for consideration by a selection board convened under section 20211 of this title (other than an officer who has been excluded under section 20231(d) of this title from consideration by the board) may send a written communication to the board, to arrive not later than 10 calendar days before the date on which the board convenes, calling attention to any matter concerning the officer that the officer considers important to the officer’s case. The selection board shall give consideration to any timely communication under this subsection. (c) Notice of intent of certain officers To serve on or off active duty An officer on the Space Force officer list in the grade of colonel or brigadier general who receives a notice under subsection (a) shall inform the Secretary of the officer’s preference to serve either on or off sustained duty if promoted to the grade of brigadier general or major general, respectively. 20214. Information furnished to selection boards The provisions of section 615 of this title shall apply to information furnished to selection boards. 20215. Recommendations for promotion by selection boards (a) Board to recommend officers best qualified for promotion A selection board convened under section 20211 of this title shall recommend for promotion to the next higher grade those officers considered by the board whom the board, giving due consideration to the needs of the Space Force for officers with particular skills (as noted in the guidelines or information furnished the board under section 615(b) of this title), considers best qualified for promotion within each competitive category considered by the board. (b) Number to be recommended The Secretary of the Air Force