The methodology was first articulated in A Study of Active Shooter Incidents in the United States Between 2000 and 2013 and was applied to the 2025 incidents for consistency.
NCIER®
Methodology from the 2000-2013 study was applied to 2025 incidents for consistency
How to cite
APA
Federal Bureau of Investigation. (2026). Active Shooter Incidents in the United States in 2025 (p. 9). Claim p009-05, NCIER Claim Map. https://ncier.org/research/claim-maps/fbi-active-shooter-2025/claims/p009-05
HTML
Federal Bureau of Investigation. (2026). Active Shooter Incidents in the United States in 2025 (p. 9). Claim p009-05, NCIER Claim Map. <a href="https://ncier.org/research/claim-maps/fbi-active-shooter-2025/claims/p009-05">https://ncier.org/research/claim-maps/fbi-active-shooter-2025/claims/p009-05</a>Link to https://ncier.org/research/claim-maps/fbi-active-shooter-2025/claims/p009-05 from your own pages; it resolves to this claim and its highlighted source passage.
License: CC BY 4.0. Free to reuse with attribution: credit NCIER Claim Map and link to the claim.
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