Originally Posted by
MariaSangria
I've used my UA Premier card to go through the Premier line when I've ended up on a Southwest flight. Never had an issue. The Global Entry card works everywhere there's a TSA Pre lane. It gets imprinted on the boarding pass if your number is attached to your FF profile. Super nice, go through security with shoes on, etc.
Your GE card shouldn't help you unless you've been selected for PreCheck that day. In fact, for your GE to have any impact on TSA security, you must be flying a carrier that participates in PreCheck and have the GE number associated with your booking--or just get lucky like everyone else these days, which is of course unlucky for those of us with GE or airline status that makes us eligible for PreCheck.