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| SSSS (Secondary Security Screening Selection or Secondary Security Screening Selectee, known by its initials SSSS, is an airport security measure in the United States which selects passengers for additional inspection.: If you're on a watch list of some kind, you can expect to see SSSS on your boarding pass. Lyashenko I.) | |||
| отобранный для дополнительного досмотра: 1 phrase in 1 subject |
| Airports and air traffic control | 1 |