Clear, aka the "Registered Traveller" program, is no more. Between airlines that allowed an increasing number of "elite" fliers to jump the security queues, and the TSA itself getting better at making the lines move, the company's value proposition rapidly eroded. Did competition from the registered traveler program encourage these developments? I guess we'll find out soon.
A treehouse can be an ideal office space, vacation rental, and way of reconnecting with your youth.