Yup. And even if they don't actually bother to do that, just being on the airplane list effects your ability to travel by ship: "For example, she wrote, the FB

Yup. And even if they don't actually bother to do that, just being on the airplane list effects your ability to travel by ship: "For example, she wrote, the FBI's Terrorist Screening Center shares watchlist information with 22 governments, and U.S. Customs and Border Protection also makes recommendations to ship captains, which could interfere with a person's travels."