Direct link to John Lott. Skip the blog.
https://crimeresearch.org/2022/10/massive-errors-in-fbis-active-shooting-reports-regarding-cases-where-civilians-stop-attacks-instead-of-4-4-the-correct-number-is-at-least-34-4-in-2021-it-is-at-least-49-1-excluding-gun-free-zon/
Thank ye, sailor.