; and $750,000,000 shall be transferred to Federal Emergency Management Agency—Federal Assistance to support sheltering and related activities provided by non-Federal entities through the Shelter and Services Program: 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. PROCUREMENT, CONSTRUCTION, AND IMPROVEMENTS For an additional amount for U.S. Customs and Border Protection—Procurement, Construction, and Improvements , $2,334,000,000, to remain available until September 30, 2027: Provided, That of the total amount provided under this heading in this Act, $2,000,000,000 shall be for acquisition and deployment of non-intrusive inspection technology, $260,000,000 shall be for acquisition and deployment of border security technology, and $74,000,000 shall be for acquisition and deployment of air assets: 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. U.S. Immigration and customs enforcement OPERATIONS AND SUPPORT For an additional amount for U.S. Immigration and Customs Enforcement—Operations and Support , $6,043,876,000, to remain available until September 30, 2026: Provided , That of the total amount provided under this heading in this Act, $1,671,614,000 shall be for increased custodial detention capacity, $2,465,643,000 shall be for increased removal flights and related activities, including short-term staging facilities, $415,752,000 shall be for hiring U.S. Immigration and Customs Enforcement personnel, $203,765,000 shall be for counter fentanyl investigations and enforcement, and $1,287,102,000 shall be for increased enrollment capabilities and related activities within the Alternatives to Detention program: Provided further , That such amount is designated by the Congress as being for an emergency