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Was talking with katie coleman who will be flying in a couple months to the space station for her six months, and she was in the buoyancy last week running through -- before they did the space walk, the procedures that they are doing up there now. to make sure that all that works before they actually do it in space, right? >> absolutely. so the coordination that you have here is, you know, years ago people had who say, well, what happens if the coolant pump fails, so lets carry some extra coolan...