; and (ii) travel performed to the residence of the member upon return to active service at the end of the participation of the member in the program. (B) Single residence An allowance is payable under this paragraph only with respect to travel of a member to and from a single residence. (5) Leave balance A member who participates in a program is entitled to carry forward the leave balance existing as of the day on which the member begins participation and accumulated in accordance with section 701 of title 10, but not to exceed 60 days. (g) Promotion (1) Officers (A) In general An officer participating in a program under this section shall not, while participating in the program, be eligible for consideration for promotion under chapter 21 or 37 of this title. (B) Return to service Upon the return of an officer to active service after completion by the officer of participation in a program— (i) the Commandant may adjust the date of rank of the officer in such manner as the Commandant shall prescribe in regulations for purposes of this section; and (ii) the officer shall be eligible for consideration for promotion when officers of the same competitive category, grade, and seniority are eligible for consideration for promotion. (2) Enlisted members An enlisted member participating in a program shall not be eligible for consideration for advancement during the period that— (A) begins on the date of the inactivation of the member from active service under the program