I had the chance to attend the celebration of United Airlines uber frequent flyer Tom Stuker, who hit the 10 million mile Mileage Plus mark in July 2011. As part of that event, the nice folks at the airline took us on a great tour of its flagship Chicago O’Hare hub. I’m a huge fan of the lights that spark up the escalator tubes that connect the airport’s terminals. I snapped this as we took our walk. Enjoy!