Throughout the year, a coterie of FBI agents, child protection workers and school psychologists gather in Minnesota to try to stop the next mass shooting — ideally before even needing to involve police.
The FBI has more than 20 of what it calls Threat Assessment Threat Management (TATM) teams across the state — and in each of the bureau’s 56 field offices nationwide — as part of the Justice Department’s answer to the historic death toll of the 2017 Las Vegas music festival shooting and the Parkland High School shooting months later.
“We’re not trying to predict behavior; we’re trying to prevent behavior,” said Patrick Rielly, a special agent who leads the program for the FBI in Minneapolis, whose office also covers the Dakotas.
Rielly, who has been the FBI’s threat management coordinator in Minnesota since 2019, said that its teams here have worked on “hundreds” of cases since then, most of which did not require a criminal justice response. He said that recently involved connecting one student whose behavior concerned his suburban metropolitan school with a chance to play baseball — something his grades had precluded earlier.
“We want people to feel like they can come forward with a loved one or with a spouse or a coworker and tell us that they’re concerned without the feeling that there’ll be retribution or that the person is just going to get arrested,” he said.

The teams seek to identify the types of behavior at various stages in the process of trying to plan and carry out attacks. If the behavior is detected early enough, law enforcement or community members may even be able to dissuade someone from their plans. That “off-ramp” work is informed by the FBI’s Behavioral Analysis Unit, best known for its work studying serial killers. It draws on the unit’s six-step “pathway to violence,” a continuum that starts with a grievance and evolves into an ideology that violence is justified and needed to solve that problem.
Rielly likens his team’s work to that of a cardiologist, who looks at all the factors in heart health and draws up plans to improve problem areas before it’s too late. Rielly wants friends, relatives or colleagues concerned that someone they know is on such a path to get the team involved as soon as possible.
This might also help protect people close to a potential assailant from legal liability: Courts are increasingly finding educators, parents and others responsible for failing to protect the public.