; or (2) the date of the enactment of an Act authorizing funds for military construction for fiscal year 2024. (b) Exception Subsection (a) shall not apply to authorizations for military construction projects, land acquisition, family housing projects and facilities, and contributions to the North Atlantic Treaty Organization Security Investment Program (and authorizations of appropriations therefor), for which appropriated funds have been obligated before the later of— (1) October 1, 2023; or (2) the date of the enactment of an Act authorizing funds for fiscal year 2024 for military construction projects, land acquisition, family housing projects and facilities, or contributions to the North Atlantic Treaty Organization Security Investment Program. 2003. Effective date Titles XXI through XXVII and title XXIX shall take effect on the later of— (1) October 1, 2018