Boeing's coverage of its own 787 Dreamliner first and second flight has been so weirdly non-intuitive that I haven't really worked out how you're supposed to follow it, even though I'd love to. Anyway the pictures below are from the Boeing-owned Future of Flight enterprise via Seattle PI - or something.
If you want to re-post them I wouldn't worry too much, I don't suppose anybody apart from Boeing was in formation with the 787 over Mt Rainier to date. (Although if you were, do tell. I once nearly created a career-limiting situation by formating on the AEW Nimrod prototype while solo in a Jet Provost T5A without considering the issue that he could cross airway R1 whereas I was not authorised to do so and at that time had no idea how you'd do it anyway.)