I was in San Francisco for a work visit a little while back.  I was picking up a rental car so took the shuttle that runs around the terminal areas and then out to the rental car facility.  This trip gives you a view of the apron areas by each terminal.  As you drop away from the central terminal area, you get a good view back across the ramp area predominantly used by United but also other Star Alliance carriers.  I grabbed some shots from the shuttle to give an overview of this area that is otherwise obscured from view.