That tracked vehicle that moves the Space Shuttle to the launch pad, the “crawler”. Does it stay there, under the ship, during launch? Or is the giant platform upon which sits the Space ship, simply being carried by the crawler vehicle, and then set in place? If the latter, there would have to be some way for the crawler to get out from under the platform and drive away. Watched on NASA TV today the video of the transfer from one launch pad to the other of the Endeavor. It looked as though that giant platform was raised up off some huge pins before being toted off by the crawler. Surely the tracked thing doesn’t sit there under the ship during launch, but I’ve never seen photo or video of the tracked thing without the platform on top.