With AI, jets and police squadrons, Paris is securing the Olympics — and worrying critics

A Games-time force of up to 45,000 police and gendarmes is also backed up by a 10,000-strong contingent of soldiers that has set up the largest military camp in Paris since World War II, from which soldiers should be able to reach any of the city's Olympic venues within 30 minutes.

Armed military patrols aboard vehicles and on foot have become common in crowded places in France since gunmen and suicide bombers acting in the names of al-Qaida and the Islamic State group repeatedly struck Paris in 2015. They don't have police powers of arrest but can tackle attackers and restrain them until police arrive. For visitors from countries where armed street patrols aren't the norm, the sight of soldiers with assault rifles might be jarring, just as it was initially for people in France.

“At the beginning, it was very strange for them to see us and they were always avoiding our presence, making a detour,” said Gen. Éric Chasboeuf, deputy commander of the counter-terror military force, called Sentinelle.

“Now, it's in the landscape," he said.

Rafale fighter jets, airspace-monitoring AWACS surveillance flights, Reaper surveillance drones, helicopters that can carry sharpshooters, and equipment to disable drones will police Paris skies, which will be closed during the opening ceremony by a no-fly zone extending for 150 kilometers (93 miles) around the capital. Cameras twinned with artificial intelligence software — authorized by a law that expands the state's surveillance powers for the Games — will flag potential security risks, such as abandoned packages or crowd surges,

France is also getting help from more than 40 countries that, together, have sent at least 1,900 police reinforcements.

Attacks by lone individuals are major concern, a risk driven home most recently to French officials by the assassination attempt against Donald Trump.

Some involved in the Olympic security operation were stunned that the gunman armed with an AR-style rifle got within range of the former U.S. president.

“No one can guarantee that there won't be mistakes. There, however, it was quite glaring,” said Gen. Philippe Pourqué, who oversaw the construction of a temporary camp in southeast Paris housing 4,500 soldiers from the Sentinelle force.

In France, in the last 13 months alone, men acting alone have carried out knife attacks that targeted tourists in Paris, and children in a park in an Alpine town, among others. A man who stabbed a teacher to death at his former high school in northern France in October had been under surveillance by French security services for suspected Islamic radicalization.

With long and bitter experience of deadly extremist attacks, France has armed itself with a dense network of police units, intelligence services and investigators who specialize in fighting terrorism, and suspects in terrorism cases can be held longer for questioning.

Hundreds of thousands of background checks have scrutinized Olympic ticket-holders, workers and others involved in the Games and applicants for passes to enter Paris' most tightly controlled security zone, along the Seine's banks. The checks blocked more than 3,900 people from attending, Interior Minister Gerald Darmanin said. He said some were flagged for suspected Islamic radicalization, left- or right-wing political extremism, significant criminal records and other security concerns.

“We’re particularly attentive to Russian and Belorussian citizens,” Darmanin added, although he stopped short of linking exclusions to Russia’s war in Ukraine and Belarus’ role as an ally of Moscow.

Darmanin said 155 people considered to be “very dangerous” potential terror threats are also being kept away from the opening ceremony and the Games, with police searching their homes for weapons and computers in some cases.

He said intelligence services haven't identified any proven terror plots against the Games “but we are being extremely attentive.”