; (2) congratulates the Royal Navy for steadfastly maintaining the Continuous At-Sea Deterrent; (3) Recognizes the important contribution of the Continuous At-Sea Deterrent to the North Atlantic Treaty Organization; (4) reaffirms that the United Kingdom is a valued and special ally of the United States; and (5) looks forward to continuing and strengthening the shared commitment of the United States and the United Kingdom to sustain submarine-based strategic deterrents well into the future. 1618. Matters relating to the nuclear-armed sea-launched cruise missile (a) Program treatment Not later than 90 days after the date of the enactment of this Act, the Under Secretary of Defense for Acquisition and Sustainment shall— (1) establish a program for the development of a nuclear-armed, sea-launched cruise missile capability; (2) designate such program as an acquisition category 1D program, to be managed consistent with the provisions of Department of Defense Instruction 5000.85 (relating to major capability acquisition); (3) initiate a nuclear weapon project for the W80–4 ALT warhead, at phase 6.2 of the phase 6.X process (relating to feasibility study and down select), to align with the program described in paragraph (1); (4) submit to the National Nuclear Security Administration a formal request, through the Nuclear Weapons Council, for participation in and support for the W80–4 ALT warhead project