subdivision 1 of division B of the Bipartisan Budget Act of 2018 ( Public Law 115–123 ), not more than $25,000,000 may be used to prevent, prepare for, and respond to coronavirus: Provided , That amounts repurposed under this heading in this Act that were previously designated by the Congress as an emergency requirement pursuant to the Balanced Budget and Emergency Deficit Control Act of 1985 are designated by the Congress as an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985. Grants-in-aid for airports For an additional amount for Grants-In-Aid for Airports , to enable the Secretary of Transportation to make grants in accordance with the terms and conditions in section 401 of title IV division R of the Take Responsibility for Workers and Families Act , $10,000,000,000, to remain available until expended: Provided , That amounts made available under this heading in this Act shall be derived from the general fund: Provided further , That such amount is designated by the Congress as being for an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985. Research, Engineering, and Development For an additional amount for Research, Engineering, and Development , as authorized in section 705 of title VII of division R of the Take Responsibility for Workers and Families Act , $100,000,000, to remain available until expended: Provided , That such amount is designated by the Congress as being for an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985. Federal motor carrier safety administration Motor carrier safety operations and programs Of prior year unobligated contract authority and liquidating cash provided for Motor Carrier Safety in the Transportation Equity Act for the 21st Century ( Public Law 105–178 ), SAFETEA–LU ( Public Law 109–59 ), or any other Act, in addition to amounts already appropriated in