Originally Posted by laughinlab2001

Received the illustrious SSSS for the first time ever on 9/18 traveling LHR-LAX (originating flight was FRA-LHR earlier that morning); got pulled aside at the gate in LHR as the boarding process started for secondary screening. I checked in the night before at the FRA Sheraton (I assume there is no connection between the two events) and saw the SSSS on my boarding pass, called United and they were unable to reissue the boarding pass because it originated on Lufthansa (even though the LHR-LAX segment was -016 stock). The secondary screening wasn’t bad, but my Global Entry did not work at LAX and I had to go back and wait in the regular line. Not sure if there is a specific relationship between SSSS and failed Global Entry but in this instance they both happened. I checked in tonight at the Sheraton Skyline at LHR and everything went through as usual for my LHR-DEN and DEN-SNA flights tomorrow morning - TSA PreCheck on all boarding passes and no sign of SSSS.