Join Date: Dec 2002
Location: Danville, CA, USA;
Programs: UA 1MM, WN CP, Marriott LT Plat, Hilton Gold, IC Plat
Posts: 18,016
As expected did not get tagged on any of my recent domestic flights across multiple carriers. So for me the SSSS seems very much tied to overseas travel and specifically one-way flights returning to USA on a different carrier.