Originally Posted by
BigFlyer
Didn't appear random. There was a sign where you exit from the GE machines directing you to the officer sitting at the desk.
The presence of an officer wasn't random, but the questions he asked might have been. They need to have someone guarding the exit from the kiosks to make sure only GE members pass. My usual experience is they just glance at my receipt and wave me through.
Having Global Entry has never guaranteed you get to skip talking to someone. They intentionally include elements of unpredictability in all the trusted traveler programs.