Remember ` ` why we fight , '' a member of the U.S. Air Force in Afghanistan said . The pope prays for victims and calls on religious leaders to reject violence . Firefighters hold a moment of silence at the Tower of London Tower . Residents of a Filipino village bring flowers in memory of a 9/11 victim .
Remember `` why we fight , '' a member of the U.S. Air Force in Afghanistan says . The pope prays for victims and calls on world leaders to reject violence . Firefighters hold a moment of silence at the top of Sydney Tower . Residents of a Filipino village bring flowers in memory of a 9/11 victim .