I’ve always thought of an airport as an annoying way station I have to pass through to get to my destination, but Rachel seems to view 
it more like an amusement park, set up to delight her. In the Pittsburgh airport it begins with a moving walkway, where first her wheeled bag makes a fine racket on the metal grate, and then “the lady” says, “The moving walkway is ending. Please watch your step. The moving walkway is ending.” The lady is still going at it when we step onto the next section of said walkway, and though the wheels on Rachel’s bag nearly drown the lady out, she is indefatigable, reminding us once more, just before we step off: “The moving walkway is ending. Please watch your step. The moving walkway is ending.”
