not be used for any purpose other than the original purposes for which they were appropriated by the Department of Defense Appropriations Act, 2020 (division A of Public Law 116–93 ), notwithstanding the transfer authority provided by section 8005 of such Act. 8136. None of the funds made available by this Act may be used for members of the Armed Forces serving on active duty in support of security or immigration enforcement operations at the southern border unless the agency requesting such support enters into an agreement with the Secretary of Defense to reimburse the Department of Defense for all costs incurred by the Department to provide such services. 8137. Of the amounts appropriated in this Act under the heading ‘‘Operation and Maintenance, Defense- Wide’’, $50,000,000, to remain available until September 30, 2022: Provided , That such funds shall only be available to the Secretary of Defense, acting through the Office of Economic Adjustment of the Department of Defense, to make grants to communities impacted by military aviation noise for the purpose of installing noise mitigating insulation at covered facilities: Provided further , That, to be eligible to receive a grant under the program, a community must enter into an agreement with the Secretary under which the community prioritizes the use of funds for the installation of noise mitigation at covered facilities in the community: Provided further , That, in carrying out the program, the Secretary of Defense shall coordinate and minimize duplication of efforts with the noise mitigation program established under part 150 of title 14, Code of Federal Regulations: Provided further , That, in this section, the term “covered facilities” means hospitals, daycare facilities, schools, facilities serving senior citizens, and private residences that are located within one mile of a military installation or another location at which military aircraft are stationed or are located in an area impacted by excessive military aviation noise, as determined by the