reflect those amounts designated in the fiscal year 2021 budget justification materials and modified by the fiscal year 2021 appropriations adjustments in this Act and in the table in the report accompanying this Act: Provided further , That the Secretary of Defense shall notify such Committees in writing and not fewer than 15 days prior to obligating such funds for any proposed new projects or activities, or transfer of funds between budget sub-activity groups: Provided further , That such plan shall be updated and submitted to such Committees upon notification of such funds to include a justification for any changes: Provided further, That a similar plan shall be provided to such Committees outlining funds requested for fiscal year 2022 with the submission of the fiscal year 2022 budget request. 8121. Notwithstanding any other provision of this Act, to reflect savings due to favorable foreign exchange rates, the total amount appropriated in this Act is hereby reduced by $436,000,000. 8122. Notwithstanding any other provision of this Act, to reflect savings due to lower than anticipated fuel costs, the total amount appropriated in this Act is hereby reduced by $1,000,000,000. 8123. None of the funds appropriated by this Act may be used to exclude, or implement the exclusion of, the Department of Defense, or any agency, activity, or subdivision thereof, from coverage under section 7103(b)(1) or (2) of title 5, United States Code (commonly referred to as the “Federal Service Labor-Management Relations Statute”). 8124. Not later than 60 days after the date of enactment of this Act, the Secretary of Defense, in coordination with the Secretary of State, shall provide all relevant information and documents to the appropriate judicial authorities in El Salvador investigating the December 1981 massacre in El Mozote: Provided , That not later than 30 days following such action, the Secretary of Defense shall submit a report to the Committees on Appropriations of the House of Representatives and the Senate describing the