; 10 U.S.C. 2224 note) is amended to read as follows: (1) In general The Chief Information Warfare Officer of the Department of Defense under section 142 of title 10, United States Code, shall serve as the Principal Cyber Advisor to act as the principal advisor to the Secretary on military cyber forces and activities. . (6) Standards for networks A military department may not develop or procure a network that does not fully comply with such standards as the Chief Information Warfare Officer under section 142 of title 10, United States Code (as amended by paragraph (1)), may establish relating to a matter described in subsection (b) of such section. (7) Alternative proposal Not later than March 1, 2018, the Secretary of Defense shall submit to the congressional defense committees a proposal for such alternatives or modifications to the realignment of responsibilities required by section 142 of title 10, United States Code (as so amended), as the Secretary considers appropriate, together with an implementation plan for such proposal. The proposal may not be carried out unless approved by statute. (8) Quarterly briefing on implementation Not later than January 30, 2018, and every 90 days thereafter through January 1, 2019, the Secretary shall provide to the congressional defense committees a briefing on the status of the implementation of the Chief Information Warfare Officer of the Department of Defense under section 142 of title 10, United States Code (as so amended), during the preceding 90 days. (9) Effective date (A) In general Except as provided in subparagraph (B), this subsection and the amendments made by this subsection shall take effect on January 1, 2019. (B) Interim matters Paragraphs (7) and (8) of this subsection shall take effect on the date of the enactment of this Act. 903. Clarification of authority of Under Secretary of Defense for Acquisition and Sustainment with respect to service acquisition programs for which the service acquisition executive is the milestone decision authority Effective on