48 The Investigative Assistance for Violent Crimes Act of 2012 and Attorney General Order 3365-2013 (02/25/2013) tasked the FBI to research active shooter incidents beginning with the year 2000.
cite page 70 Appendix I: Active Shooters vs Mass Shooting vs Mass Killing
APA
Federal Bureau of Investigation. (2026). Active Shooter Incidents in the United States in 2025 (p. 70). Claim p070-11, NCIER Claim Map. https://ncier.org/research/claim-maps/fbi-active-shooter-2025/claims/p070-11
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