After 9/11 the Coast Guard and local Marine Patrol provided surveillance and escort services out 3 miles. They have also hired divers to inspect the bottom of the hulls for bombs when docked. The identification requirements to board are also stricter and more stringent. But when we returned from our last cruise the customs official stood against the door oblivious to anyone leaving the ship. I had to hunt him down to give him my declaration form. I thought this was too lax.