- 1 0 年前最佳解答
Of the four aircraft hijacked that day, United 93 was the only one that did not reach its target. It crashed near Shanksville, Pennsylvania at 10:03 am. No one survived.
Military commanders were not notified that United 93 had been hijacked until four minutes after it had crashed. The nearest fighter jets were 100 miles away.
At 10:18 am, the president authorized the military to engage the hijacked aircraft. Fearing an accidental shoot down, military commanders chose not to pass the order to pilots in the air.
By 12:06 pm every civilian airliner over America had been forced to land. Amidest an unprecedented military mobilization, US airspace was closed until further notice.
Dedicated to the memory of all those who lost their lives on September 11, 2001.
2006-09-11 13:19:31 補充：
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