A former FBI chief is warning that lone-wolf attackers may pose the biggest security threat to fans attending the FIFA World Cup as millions prepare to descend on North America.
Tim Gallagher, who coordinated FBI operations during Barack Obama’s 2008 inauguration and now serves as chief security officer at Nardello and Co., said solitary attackers operating on their own are the nightmare scenario for law enforcement.
“I think that the main focus is going to be on a lone gun, and in a terror capacity,” Gallagher told Telegraph Sport.
He said those attackers are especially difficult to detect before they strike.
“The real fear is going to be the lone gunman – the lone wolf is the No 1 on the radar of law enforcement both domestically and even in Canada and Mexico. That’s the hardest to stop, really,” he added.
The warning comes as authorities prepare what is expected to be the largest combined security operation in sports history.
More than 400 local, state and federal agencies are coordinating across 16 host cities in the United States, Mexico and Canada as the tournament brings millions of fans to the continent over the next six weeks.
The scale alone is staggering.
Security officials are not just dealing with packed stadiums. They are also preparing for crowded fan zones, training sites, hotels, transportation hubs and public gathering spots spread across three countries.
Experts have pointed to several added complications, including America’s broad gun laws, concerns about Mexican criminal organizations and the possibility that President Donald Trump could attend matches.
Trump’s presence at major sporting events has previously led to major security buildups and long delays for fans trying to enter venues.
One of the most intense security efforts is expected in Guadalajara, located in Jalisco, a Mexican state known for cartel activity.
Municipal police commander Roberto Lopez said officials have assembled 15,000 federal, state and local officers to patrol the city during the tournament.
“It’s an unimaginable effort that we have done over here,” Lopez told Telegraph Sport at his headquarters. “We are working with three levels of government, including national defence, the national guard, state police and local police. We’re talking about 15,000 elements working at the same time. We are ready.”
Public safety is a team sport!
With @FIFAWorldCup matches beginning this week, the FBI is working alongside local, state, federal, and international law enforcement partners through Operation Goal Kick – a coordinated security effort supporting matches at Levi’s Stadium in… pic.twitter.com/5yTS4mHbsF— FBI SanFrancisco (@FBISanFrancisco) June 8, 2026
The operation will include drones, robots, military helicopters and armored vehicles moving through the streets.
Still, officials say random violence away from stadiums may be the hardest threat to control.
That concern was underscored last weekend when nine people were injured in a shooting about four miles from Swope Soccer Village, where England is expected to hold training sessions.
The Three Lions have not yet arrived in Kansas City and are scheduled to face Costa Rica in a friendly match in Orlando, Florida.
Logan Kennedy, an assistant professor of criminal justice at East Carolina University, called the World Cup “one of the most complex events to secure, which has direct implications for crowd management”.
She noted that the United States has roughly 18,000 police agencies, many of which operate independently from one another.
That fragmented system makes coordination even more important as federal, state and local officials try to protect fans across dozens of locations.
The World Cup’s expanded format adds another layer of pressure, with 48 teams divided into 12 groups of four and matches spread across three nations.
For fans, the warning is not a reason to panic. But it is a reminder that this World Cup is not just a global sporting event. It is a massive security test.
And according to Gallagher, the threat officials fear most is not always a sophisticated cell or a foreign plot. It is one person, acting alone, who slips through the cracks.
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