It's late evening here in the Rockies, and I've turned on NASA TV to watch/sleep through the last shuttle countdown...if the weather cooperates. We've seen how the launch team can react almost instantaneously to sudden "go" conditions, so they might get her off in the morning. The RSS is retracted, and she stands bathed in the spotlights...one last time. Cliches abound, again.
Whenever she launches, this is it. Things will be very different after this shuttle launches.
What happens to LC39 after this? When will "we" launch folks into space again? Who will launch them? Lots of questions, but right now, there's a mission to fly.