FLAGS ACROSS AMERICA FLY AT HALF STAFF FOLLOWING TERRORIST ATTACKS, 2001-09-11 (photo)

An American flag flies at half-staff fronting a home in Seattle, Washington on September 11, 2001 after the World Trade Centers in New York City and the Pentagon in Washington, D.C. were attacked. In the worst attack on American soil since Pearl Harbor, three hijacked planes slammed into the Pentagon and New York's landmark World Trade Center on Tuesday, demolishing the two 110-story towers that symbolize U.S. financial might. The attacks brought normal life across the United States to a standstill, turning the major cities of the nation into eerie ghost towns. All financial markets were closed, millions of workers sent home early, all flights around the nation were canceled and all airports shut in an unprecedented move. REUTERS/Anthony P. Bolante APB