Shh! Don't spill the beans.
OK, I'll add to the thread. Earlier this month, I flew LHR-JFK-MSY. My wife and I have GE. Once we came out of customs and dropped off our bags for the connecting flight, we turned the corner and were about to take the escalator upstairs. Then we saw the ground level security. Since we both had precheck, we were through in less than a minute. Quickest/easiest security experience for me the entire year, and that surprised me about JFK. (Especially since it took us almost 30 minutes on our previous JFK I-D connection.)