As prologue to a trilogy of films about 9/11 America, this is the first channel of Laura Poitras’s double video installation. The film captures, in haunting slow-motion, the faces of stunned and saddened onlookers gazing at the unseen rubble of the World Trade Center shortly after the 9/11 attacks. The soundtrack is composed of the National Anthem recorded in October 2001 at the Yankees’ World Series Game 4 in New York.