Sept. 11
2001 In the single worst act of terrorism committed on U.S. soil, nearly 3,000 people died when hijacked jetliners crashed into New York's World Trade Center and the Pentagon and in western Pennsylvania.
Sept. 11
2001 In the single worst act of terrorism committed on U.S. soil, nearly 3,000 people died when hijacked jetliners crashed into New York's World Trade Center and the Pentagon and in western Pennsylvania.