An American flag at ground zero on the evening of Sept. 11, 2001, after the September 11 terrorist attacks on the World Trade Center in New York City.
An American flag at ground zero on the evening of Sept. 11, 2001, after the September 11 terrorist attacks on the World Trade Center in New York City. Mark Lennihan AP
An American flag at ground zero on the evening of Sept. 11, 2001, after the September 11 terrorist attacks on the World Trade Center in New York City. Mark Lennihan AP