Brazil is revising its plans for the Olympics, prompted by the attack in Nice, France. Extra security measures are likely as police run simulations throughout the city.

CCTV America’s Lucrecia Franco has more from Rio.

One hundred soldiers ran another drill on Tuesday at Rio’s Guanabara Bay to test security plans just 17 days before the Rio Games kick off.

The drills included a simulated anti- terrorism operation at a train station near one cluster of Olympic venues.

Another drill was at Maracana stadium, which will host the opening ceremony. Security concerns have increased following the truck attack in France.

In addition to the deployment of 85,000 police officers and soldiers, double the force used at the London Olympics, the new measures will include extra checkpoints, barricades, road blocks and traffic restrictions.

Although Brazil doesn’t have a history of terror attacks, the country is stepping up security in Rio to protect more than 10,000 athletes, 500,000 visitors and the city’s own 6 million residents.

These simulations are just a part of Rio’s security preparations for the Games that are relying mostly on international intelligence cooperation.

So far Brazilian authorities have denied Olympic accreditation to four people believed to have links to terrorism. Security officials have also recommended another 11,000 people be rejected, too.

Goal of cleaning Rio’s waterways before Olympics may be out of reach

Guanabara Bay, the venue for the sailing events, is so polluted that Rio’s environment secretary recently admitted that cleaning it will not happen anytime soon.