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Terror from the sky

Shock turned to grief and anger in the United States following the series of terrorist attacks Tuesday morning that destroyed four hijacked commercial airplanes, the 110-story twin towers of New York's World Trade Center and collapsed part of the Pentagon. Officials said it was too early to assess the death toll from the attacks.

President Bush put the U.S. military on "high alert status" and said that he had taken security precautions to ensure the functioning of the government. The Federal Aviation Administration shut down airports around the country. MORE ╗

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World Trade Center collapse
New York copes with massive disaster following destruction of one of the city's most famous landmarks. MORE >>

Strike on Pentagon
A devastating hit on the Pentagon shakes the nation's capital and the federal government. MORE >>

Plane crashes
The Federal Aviation Administration halted air traffic nationwide as authorities investigated the crashes of four commercial aircraft. MORE >>

World reacts
Governments around the world condemn the series of deadly attacks on the United States. MORE >>