; and (2) recommendations for other uses of such grants to further support eligible law enforcement agencies. (g) Authorization of appropriations There is authorized to be appropriated $110,000,000 for each of fiscal years 2024 through 2028 for grants under this section. . (b) Conforming amendment Subsection (a) of section 2002 of the Homeland Security Act of 2002 ( 6 U.S.C. 603 ) is amended to read as follows: (a) Grants authorized The Secretary, through the Administrator, may award grants under sections 2003, 2004, 2009, and 2010 to State, local, and Tribal governments, as appropriate. . (c) Clerical amendment The table of contents in section 1(b) of the Homeland Security Act of 2002 is amended by inserting after the item relating to section 2009 the following new item: Sec. 2010. Operation Stonegarden. . 111. Air and Marine Operations flight hours (a) Air and marine operations flight hours Not later than 120 days after the date of the enactment of this Act, the Secretary shall ensure that not fewer than 110,000 annual flight hours are carried out by Air and Marine Operations of CBP. (b) Unmanned aircraft systems The Secretary, after coordination with the Administrator of the Federal Aviation Administration, shall ensure that Air and Marine Operations operate unmanned aircraft systems on the southern border of the United States for not less than 24 hours per day. (c) Primary missions The Commissioner shall ensure the following: (1) The primary missions for Air and Marine Operations are to directly support the following: (A) U.S. Border Patrol activities along the borders of the United States. (B) Joint Interagency Task Force South and Joint Task Force East operations in the transit zone. (2) The Executive Assistant Commissioner of Air and Marine Operations assigns the greatest priority to support missions specified in paragraph (1). (d) High demand flight hour requirements The Commissioner shall— (1) ensure that U.S. Border Patrol Sector Chiefs identify air support mission-critical hours