YMMV / Stargate SG-1 S4 E6 "Window of Opportunity"

• Aluminum Christmas Trees: In one loop, O'Neill is riding a bicycle down the corridors of the Cheyenne Mountain facility, presumably one of the things he had always wanted to do and now can without fear of consequences. In some large underground facilities, especially in Europe (the LHC, for example), bicycles are a preferred means of transit.

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