Tom, when you say security do you mean the pre check line? If so be aware that having pre check does not grant you access to the pre check line unless you have it also on your electronic or paper boarding pass. There are several reasons why it might not show up on your boarding pass.
If you are talking about the GE line for customs there is not usually security. They bizarrely however allow the porters to demand GE cards even though there should be no need to show the card. Customs knows you have GE as soon as they run your name.