; and (2) by striking paragraph (2). (b) TRICARE Retired Reserve Section 1076e(a) of title 10, United States Code, is amended— (1) in paragraph (1), by striking (1) Except as provided in paragraph (2), a member and inserting A member ; and (2) by striking paragraph (2). VIII Acquisition policy, acquisition management, and related matters A Acquisition policy and management 801. Senior Military Acquisition Advisor eligibility Section 1725(d)(2) of title 10, United States Code, is amended in the second sentence by striking 30 years and inserting 26 years . 802. Reestablishment of authority for Joint Urgent Operational Needs Fund Section 2216a(e) of title 10, United States Code, is amended by striking September 30, 2018 and inserting September 30, 2025 . 803. Authority for life-of-type buys to prevent materiel shortages associated with diminishing manufacturing sources and obsolescence (a) Authorization Chapter 141 of title 10, United States Code, is amended by inserting before section 2389 the following new section: 2388. Life-of-type buys (a) Authorization Notwithstanding section 1502 of title 31, the Secretary of Defense may authorize the use of life-of-type buys to prevent weapon systems materiel shortages associated with diminishing manufacturing sources and obsolescence in such quantities that do not exceed the quantity reasonably expected to be required by the Department of Defense before a replacement item is identified. (b) Guidance The Secretary shall issue guidance, as necessary, to ensure appropriate use of the authorization in this section. The guidance, at a minimum, shall require the Department— (1) to establish that either the original manufacturer and all alternative sources intend to stop production on repair parts that are used on Government weapon systems, or all commercial sources are expected to stop production on commercial items that use older technology and are expected to become obsolete; (2) to perform an analysis of alternatives before buying spares for more than two years