; and (2) the life cycle of such weapon or program. (d) Cost estimate report Not later than 180 days after the date of the enactment of this Act, the Secretary of Defense and the Secretary of Energy shall jointly submit to the appropriate committees of Congress a report outlining the estimated cost savings that result from carrying out section 3. (e) Report on funding National Defense Strategy Not later than 180 days after the date of the enactment of this Act, the Secretary of Defense shall submit to the appropriate committees of Congress a report explaining how the Secretary proposes to fund the 2018 National Defense Strategy under different levels of projected defense spending, including scenarios in which— (1) anticipated cost savings from reform do not materialize; or (2) defense spending decreases to the levels specified by the Budget Control Act of 2011 ( Public Law 112–25 ; 125 Stat. 240). (f) Modification of period To be covered by estimates of costs relating to nuclear weapons Section 1043 of the National Defense Authorization Act for Fiscal Year 2012 ( Public Law 112–81 ; 125 Stat. 1576), as most recently amended by section 1670 of the John S. McCain National Defense Authorization Act for Fiscal Year 2019 ( Public Law 115–232 ; 132 Stat. 2157), is further amended in subsections (a)(2)(F) and (b)(1)(A) by strikning 10-year period each place it appears and inserting 25-year period . (g) Appropriate committees of Congress defined In this section, the term appropriate committees of Congress means— (1) the Committee on Armed Services, the Committee on Foreign Relations, the Committee on Appropriations, and the Committee on Energy and Natural Resources of the Senate; and (2) the Committee on Armed Services, the Committee on Foreign Affairs, the Committee on Appropriations, the Committee on Energy and Commerce, and the Committee on Natural Resources of the House of Representatives.