The First Family will return to South Florida for the Thanksgiving holiday with Air Force One is expected to touch down Tuesday night in Palm Beach County.

Consequently the U.S. Coast Guard will be enforcing security zones on the Atlantic Ocean and Intercoastal Waterway on either side of the Mar-a-Lago Trump resort.

The security zones are necessary to protect the VIP and accompanying official party, the public, and the surrounding waterway from terrorist acts, sabotage or other subversive acts, accidents, or other causes of a similar nature,” the Coast Guard says. “Entering, stopping, or anchoring in this security zone is prohibited unless authorized by the Captain of the Port Miami or a designated representative.”

Here’s how the Miami Herald describes those zones:

The water travel security zones established by the U.S. Coast Guard start Tuesday afternoon and run until late Sunday. The East Zone is the biggest one, going from Banyan Road on the north end to Ocean View Road on the south end and running 1,000 yards into the Atlantic Ocean.

The West Zone’s borders are the waters of Lake Worth Lagoon, 700 yards north of the Southern Boulevard Bridge ending at daybeacon “20,” and 200 yards to the south of the Southern Boulevard Bridge, ending at Flagler Promenade S Road. Boats have to maintain a steady speed when going through these zones.

Between those two is the Center Zone. It has the same north-south borders as the West Zone, but is bordered on the west by Bingham Island and Palmsicle Island and on the east by Palm Beach. Let’s just say, don’t even go there. You need Coast Guard permission to be in this zone. Zone violations can incur a $10,000 fine and 12 years in prison.