FBI boss Kash Patel details how agency and partners secured record-shattering FIFA World Cup

Patel said the planning and execution had to be "mathematically precise."

The tournament shattered previous attendance records and brought millions of international visitors to the country. The FBI dedicated nearly 5,000 personnel to the effort, including more than 4,000 from field offices, 800 from FBI headquarters and two legal attaché offices, along with support from 59 Homeland Security task forces. 

"If you're in the space, we're gonna take you down. And that's why we took down over 700," Patel said. "Some of these folks were maybe borderline nuisances, while many of them were criminal in terms of violations of FAA airspace and also failing to register their drones… We're not taking any chances."

"We, the FBI, specifically train for the worst of the worst," Patel said, pointing to the possibility of drones being used to deploy explosives or chemical agents. Former FBI Deputy Director Dan Bongino was instrumental in developing the bureau's counter-drone program.

Eight defendants have since been charged, although the allegations remain unproven and the defendants are presumed innocent.

International cooperation was another critical component of the World Cup security operation.

"They're working overseas in their home locations and giving us information back in real time on any single threat that's coming in," Patel said.

The FBI hosted the International Police Cooperation Center in Northern Virginia, deploying more than 70 personnel to work alongside officers from U.S. host cities and security officials representing the nations sending teams to the tournament. 

The FBI also assembled a Joint Operations Center with foreign police representatives from 46 of the 48 participating countries, allowing investigators to receive real-time threat intelligence from officials who understood their teams, fan bases and domestic security concerns. That information was supported by the FBI's Intelligence Coordination Center, where more than 400 personnel processed an average of 26 incidents per day and produced nearly 100 intelligence reports for federal, state, local and private-sector partners, according to the FBI.

Patel said the coordinated structure allowed the FBI to quickly send bomb technicians, evidence teams, tactical operators, SWAT personnel and hostage-rescue capabilities wherever additional resources were needed.