<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by SEA_Tigger:
Usually SSSS is triggered by factors other then type of check-in. Things like purchasing one-way tickets and paying cash for tickets.</font>
In my case, this trip was no different than any other business trip. I'm 1K and I was in C using upgrade certs. I think it must have been a random selection.