The JTTF isn't an agency, it's a task force lead by the FBI in a local region with membership of local and state law enforcement. First one was in NYC, there ar

The JTTF isn't an agency, it's a task force lead by the FBI in a local region with membership of local and state law enforcement. First one was in NYC, there are now task forces in most major metro areas. Most states and major cities have anti-terrorism/homeland security departments of their police forces. The agents could have been any mix of FBI, ATF, State Police, Local Police etc.