Reported about 1 year ago
A frequent traveler recently found 'SSSS' stamped on their boarding pass before a flight from Taiwan to Seattle, meaning they had to undergo a high-profile secondary security screening. The 'SSSS' designation is used by the Transportation Security Administration (TSA) in the U.S. to mark passengers who require additional security checks, often targeting those with unusual travel patterns like one-way international tickets or visits to destinations considered high-risk. Fellow travelers shared their experiences of being flagged for extra screenings, citing multiple screenings regardless of whether or not there were any issues, emphasizing the importance of cooperation and patience during the process.
Source: YAHOO