; 133 Stat. 1478); (D) a current prime contractor of a defense business system as defined in section 2222 of title 10, United States Code; or (E) a current prime contractor of a service contract with the Department of Defense, as defined in part 237 of the Defense Federal Acquisition Regulation Supplement, above the simplified acquisition threshold. 833. Analyses of certain activities for action to address sourcing and industrial capacity (a) Analysis required (1) In general The Secretary of Defense, acting through the Under Secretary of Defense for Acquisition and Sustainment and other appropriate officials, shall review the items under subsection (c) to determine and develop appropriate actions, consistent with the policies, programs, and activities required under subpart I of part V of subtitle A of title 10, United States Code, chapter 83 of title 41, United States Code, and the Defense Production Act of 1950 ( 50 U.S.C. 4501 et seq. ), including— (A) restricting procurement, with appropriate waivers for cost, emergency requirements, and non-availability of suppliers, including restricting procurement to— (i) suppliers in the United States; (ii) suppliers in the national technology and industrial base (as defined in section 4801 of title 10, United States Code); (iii) suppliers in other allied nations; or (iv) other suppliers; (B) increasing investment through use of research and development or procurement activities and acquisition authorities to— (i) expand production capacity; (ii) diversify sources of supply; or (iii) promote alternative approaches for addressing military requirements; (C) prohibiting procurement from selected sources or nations; (D) taking a combination of actions described under subparagraphs (A), (B), and (C)