Arriving back in Seattle from our UK vacation, we got to use the new international arrivals facility.  This includes the bridge from the South Satellite.  This crosses the taxiway between the two terminal buildings.  It’s not like you have the time to hang around in the area and I imagine they might discourage you from doing so.  However, you can grab a few shots of the aircraft beneath you while crossing.  The reflections were a bit of a problem but I am not going to be there very often so make the most of it!