People look out of the burning North tower of the World Trade Center in New York City September 11, 2001. Both towers were hit by planes crashing into the buildings. Shortly after this photo was taken this tower fell. 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. REUTERS/Jeff Christensen
