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S. 4380

BillFederalSenateIn Committee
Critical Infrastructure Airspace Defense Act
About This Bill
Committee
Latest Action · April 22, 2026
Read twice and referred to the Committee on Homeland Security and Governmental Affairs.
Congress
119th (2025–2027)
Introduced
April 22, 2026
Cosponsors (0)
None
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Summary

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This bill would authorize private owners and operators of critical infrastructure facilities to use drone-detection and countermeasure technologies to protect their sites from unmanned aircraft threats. Currently, only federal and state law enforcement have clear legal authority to use such systems, leaving private companies that own power plants, electrical substations, and other vital infrastructure without statutory protection. The legislation requires personnel at these facilities to complete federally-approved training and certification before using counter-drone technology, and mandates coordination with the Federal Aviation Administration to prevent interference with commercial air traffic. The bill creates a grant program funded at $250 million over fiscal years 2027 through 2031 to help critical infrastructure owners purchase and install approved systems, and it provides liability protection for authorized personnel using these technologies in good faith. The authority granted by this legislation would expire on September 30, 2031, unless Congress extends it.

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