Across the nation, Americans are marking the 25th anniversary of 9/11, remembering the shock, those who died, and the wide-ranging consequences of al-Qaida's attacks on symbols of U.S. power and prosperity.
Friday's milestone will feature traditional memorial ceremonies—including wreath-laying, flying flags, silent moments, vigils, the reading of victims' names, and volunteer efforts—honoring a day that roughly half of U.S. adults consider the most historic moment of their lifetime, according to a recent poll.
