September 30, 2025: Provided, That not to exceed $7,650 shall be for official reception and representation expenses: Provided further, That security service fees authorized under section 44940 of title 49, United States Code, shall be credited to this appropriation as offsetting collections and shall be available only for aviation security: Provided further, That the sum appropriated under this heading from the general fund shall be reduced on a dollar-for-dollar basis as such offsetting collections are received during fiscal year 2024 so as to result in a final fiscal year appropriation from the general fund estimated at not more than $7,498,131,000. PROCUREMENT, CONSTRUCTION, AND IMPROVEMENTS For necessary expenses of the Transportation Security Administration for procurement, construction, and improvements, $130,340,000, to remain available until September 30, 2026. RESEARCH AND DEVELOPMENT For necessary expenses of the Transportation Security Administration for research and development, $33,532,000, to remain available until September 30, 2025. Coast guard OPERATIONS AND SUPPORT For necessary expenses of the Coast Guard for operations and support including the Coast Guard Reserve