Most complete the screening, board their flight, and continue their journey without any issues.
For families waiting at home, the important thing to remember is that SSSS is usually a security designation rather than a sign of trouble.
While additional screening may cause delays, it is a normal part of modern air travel.
So if a loved one calls from the airport saying they’ve been selected for SSSS, the best response is usually reassurance rather than panic.
With a little patience, they’ll most likely be on their way soon.