U.S. marks 17th anniversary of 9/11 with somber tributes, new monument to victims
NEW YORK -- Americans looked back on 9/11 on Tuesday with solemn ceremonies, volunteer service and a presidential tribute to "the moment when America fought back" on one of the hijacked planes used as weapons in the deadliest terror attack on U.S. soil. Thousands of 9/11 victims' relatives, survivors, rescuers and others who gathered on a misty Tuesday morning at the memorial plaza where the World Trade Center's twin towers once stood.