; 10 U.S.C. 2224 note) is amended— (1) in subsection (b), by striking The Secretary of Defense shall designate the Principal Cyber Advisor of the Department of Defense and inserting Not later than 30 days after the date of the enactment of the National Defense Authorization Act for Fiscal Year 2024, the Secretary of Defense shall designate a principal staff assistant from within the Office of the Secretary of Defense who shall serve ; (2) in subsection (c)— (A) in the matter preceding paragraph (1), by striking the Principal Cyber Advisor of the Department of Defense and inserting the principal staff assistant designated under subsection (b) ; and (B) in paragraph (1), by striking Sector Specific Agency and inserting Sector Risk Management Agency ; (3) in subsection (d), by striking Principal Cyber Advisor of the Department of Defense and inserting principal staff assistant designated under subsection (b) ; and (4) in subsection (e)— (A) in the matter preceding paragraph (1), by striking this Act and inserting the National Defense Authorization Act for Fiscal Year 2024 ; (B) in paragraph (2), by striking Sector Specific Agency functions under Presidential Policy Directive-21 from non-cybersecurity Sector Specific Agency functions and inserting functions of a Sector Risk Management Agency pursuant to section 9002 of the National Defense Authorization Act for Fiscal Year 2021 ( 6 U.S.C. 652a ) from non-cybersecurity functions of a Sector Risk Management Agency ; and (C) by striking paragraph (3). 1512. Cybersecurity enhancements for nuclear command, control, and communications network (a) Establishment of cross-functional team (1) Establishment Not later than 180 days after the date of the enactment of this Act, and consistent with section 911(c) of the National Defense Authorization Act for Fiscal Year 2017 ( Public Law 114–328