; 122 Stat. 393), as most recently amended by section 1225 of the John S. McCain National Defense Authorization Act for Fiscal Year 2019 ( Public Law 115–232 ), is further amended in the matter preceding paragraph (1) by striking October 1, 2018, and ending on December 31, 2019 and inserting October 1, 2019, and ending on December 31, 2020 . (b) Limitation on amounts available Subsection (d)(1) of such section is amended by striking October 1, 2018, and ending on December 31, 2019, may not exceed $350,000,000 and inserting October 1, 2019, and ending on December 31, 2020, may not exceed $450,000,000 . 1207. Extension of Afghan Special Immigrant Program Section 602(b)(3)(F) of the Afghan Allies Protection Act of 2009 ( 8 U.S.C. 1101 note) is amended— (1) in the heading, by striking 2015, 2016, and 2017 and inserting 2015 through 2020 ; (2) in the matter preceding clause (i), by striking 18,500 and inserting 22,500 ; (3) in clause (i), by striking December 31, 2020 and inserting December 31, 2021 ; and (4) in clause (ii), by striking December 31, 2020 and inserting December 31, 2021 . 1208. NATO special operations headquarters Section 1244 of the National Defense Authorization Act for Fiscal Year 2010 ( Public Law 111–84 ; 123 Stat. 2541), as most recently amended by section 1280 of the National Defense Authorization Act of Fiscal Year 2016 ( Public Law 114–92 ; 129 Stat. 1080), is further amended— (1) in subsection (a), by striking each of the fiscal years 2013 through 2020 and inserting each of the fiscal years 2013 through 2025 ; (2) by striking section (c); and (3) by redesignating subsection (d) as subsection (c). 1209. Afghanistan Security Forces Fund (a) Authorization of appropriations Funds are hereby authorized to be appropriated for fiscal year 2020 for the Afghanistan Security Forces Fund, as established by section 1513 of the National Defense Authorization Act for Fiscal Year 2008 ( Public Law 110–181