cruise missile capable of carrying a low-yield or nonstrategic nuclear warhead. (k) Limitation on plutonium pit production Notwithstanding any other provision of law, none of the funds authorized to be appropriated or otherwise made available for fiscal year 2020 or any fiscal year thereafter for the Department of Defense or the Department of Energy may be obligated or expended for achieving production of more than 30 plutonium pits per year at Los Alamos National Laboratory, Los Alamos, New Mexico. (l) Limitation on W87–1 warhead procurement and deployment Notwithstanding any other provision of law, none of the funds authorized to be appropriated or otherwise made available for fiscal year 2020 or any fiscal year thereafter for the Department of Defense or the Department of Energy may be obligated or expended for the procurement or deployment of the W87–1 warhead for use on any missile that can feasibly employ a W87 warhead. (m) Limitation on sustainment of B83–1 bomb Notwithstanding other provision of law, none of the funds authorized to be appropriated or otherwise made available for fiscal year 2020 or any fiscal year thereafter for the Department of Defense or the Department of Energy may be obligated or expended for the sustainment of the B83–1 bomb beyond the time at which confidence in the B61–12 stockpile is gained. (n) Prohibition on space-Based missile defense Notwithstanding other provision of law, none of the funds authorized to be appropriated or otherwise made available for fiscal year 2020 or any fiscal year thereafter for the Department of Defense or the Department of Energy may be obligated or expended for the research, development, test, and evaluation or procurement of a space-based missile defense system. 4. Reports required (a) Initial 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 plan of each Secretary to carry out section