; (B) by redesignating paragraphs (4) through (9) as paragraphs (5) through (10), respectively; (C) by striking paragraph (3); and (D) by inserting after paragraph (2) the following new paragraphs: (3) The official within the Office of the Under Secretary of Defense for Research and Engineering who is responsible for environmental security. (4) The official within the Office of the Under Secretary of Defense for Acquisition and Sustainment who is responsible for environmental security. . (48) In section 2926(e)(5)(D), by striking the Under Secretary of Defense for Acquisition, Technology, and Logistics and inserting the Under Secretary of Defense for Acquisition and Sustainment . (b) National Defense Authorization Acts (1) Public Law 115–232 Section 338 of the John S. McCain National Defense Authorization Act for Fiscal Year 2019 ( Public Law 115–232 ; 132 Stat. 1728) is amended by striking the Under Secretary of Defense for Acquisition, Technology, and Logistics and inserting the Under Secretary of Defense for Acquisition and Sustainment . (2) Public Law 115–91 Section 136(a)(1) of the National Defense Authorization Act for Fiscal Year 2018 ( Public Law 115–91