MIAMI -- The first day of the Free Trade Area of the Americas convention was relatively quiet, but there was still a large police presence in downtown Miami.

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Several hundred officers patrolled the mostly empty streets on Monday. The city even rolled out its fleet of armored personnel carriers in the ghost town.

A command center for police operations has been set up at the city of Miami police headquarters. There, city and police leaders can keep constant watch on downtown and coordinate the 40 agencies that are working together to keep the peace.

More than a dozen city, state, county and federal agencies are patrolling just the waters of Biscayne Bay and the Atlantic.

There had been talk that some protesters may try to shut down the port of Miami by either tying themselves to the anchor lines of cargo ships or by forming chains on the water. So far, there have been no incidents.