; (B) the Commandant determines the exclusion from consideration is in the best interest of the Coast Guard; and (C) the officer has not previously failed of selection for promotion to the grade for which the officer requests the exclusion from consideration. . 3. Temporary promotion authority for officers in certain grades with critical skills (a) In general Chapter 21 of title 14, United States Code, is amended by inserting after section 2129 the following: 2130. Promotion to certain grades for officers with critical skills: captain, commander, lieutenant commander, lieutenant (a) In general An officer in the grade of lieutenant (junior grade), lieutenant, lieutenant commander, or commander, who is described in subsection (b) may be temporarily promoted to the grade of lieutenant, lieutenant commander, commander, or captain under regulations prescribed by the Secretary. Appointments under this section shall be made by the President, by and with the advice and consent of the Senate. (b) Covered officers An officer described in this subsection is any officer in a grade specified in subsection (a) who— (1) has a skill in which the Coast Guard has a critical shortage of personnel (as determined by the Secretary); and (2) is serving in a position (as determined by the Secretary) that— (A) is designated to be held by a lieutenant, lieutenant commander, commander, or captain