Act: 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. Children And Families Services Programs For an additional amount for Children and Families Services Programs , $5,202,000,000, to remain available until September 30, 2021, which shall be used as follows: (1) $1,000,000,000 for making payments under the Head Start Act to be allocated in an amount that bears the same ratio to such portion as the number of enrolled children served by the agency involved bears to the number of enrolled children by all Head Start agencies: Provided , That none of the funds appropriated in this paragraph shall be included in the calculation of the ‘‘base grant’’ in subsequent fiscal years, as such term is defined in sections 640(a)(7)(A), 641A(h)(1)(B), or 645(d)(3) of the Head Start Act: Provided further , That funds appropriated in this paragraph are not subject to the allocation requirements of section 640(a) of the Head Start Act and in addition to allowable uses of fund in 45 CFR 1301–1305, shall be allowable for developing and implementing procedures and systems to improve the coordination, preparedness and response efforts with State, local, tribal, an territorial public health departments, and other relevant agencies