year (or any subdivisions thereof). Amounts of authorizations so transferred shall be merged with and be available for the same purposes as the authorization to which transferred. (2) Limitation The total amount of authorizations that the Secretary may transfer under the authority of this subsection may not exceed $2,500,000,000. (b) Terms and conditions Transfers under this section shall be subject to the same terms and conditions as transfers under section 1001. (c) Additional authority The transfer authority provided by this section is in addition to the transfer authority provided under section 1001. XVI Strategic programs, cyber, and intelligence matters A Space Activities I United States Space Force 1601. Assistant Secretary of Defense for Space Policy Section 138(b) of title 10, United States Code, is amended by adding at the end the following new paragraph: (5) One of the Assistant Secretaries is the Assistant Secretary of Defense for Space Policy. The principal duty of the Assistant Secretary shall be the overall supervision of policy of the Department of Defense for space warfighting. . 1602. Principal Assistant to the Secretary of the Air Force for Space Acquisition and Integration (a) Redesignation of Principal Assistant for Space as Principal Assistant for Space Acquisition and Integration (1) In general The Principal Assistant to the Secretary of the Air Force for Space is hereby redesignated as the Principal Assistant to the Secretary of the Air Force for Space Acquisition and Integration. (2) References Any reference to the Principal Assistant to the Secretary of the Air Force for Space in any law, regulation, map, document, record, or other paper of the United States shall be deemed to be a reference to the Principal Assistant to the Secretary of the Air Force for Space Acquisition and Integration. (b) Codification of position and responsibilities (1) In general Chapter 903 of title 10, United States Code, is amended— (A) by redesignating section 9018 as section 9018a