; or (B) three years. (2) Waiver The Secretary may authorize a tour of duty of a member of the Armed Forces serving as a director of a military treatment facility of a shorter length than is otherwise provided for in paragraph (1) if the Secretary determines, in the discretion of the Secretary, that there is good cause for a tour of duty in such position of shorter length. Any such determination shall be made on a case-by-case basis. 723. Clarification of administration of military medical treatment facilities Section 1073c(a) of title 10, United States Code, is amended— (1) in paragraph (1)(E), by striking miliary and inserting military ; (2) in paragraph (2), in the matter preceding subparagraph (A), by striking commander of each military medical treatment facility and inserting military or civilian director of each military medical treatment facility, under the authority, direction, and control of the Director of the Defense Health Agency,