FBI Expert Reveals How They FOILED Michigan Halloween Terrorist Plo The first thread of this plot was reportedly pulled by a member of an FBI Joint Terrorism Task Force, or JTTF. These task forces are the backbone of modern counterterrorism, combining the resources of federal, state, and local agencies. An agent, an informant, or maybe a tip from a concerned citizen, flagged the online chatter. It wasn't a fully formed plot yet—more like a disturbing discussion.

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