1.   Before Bush was aboard Air Force One, another airliner crashed into the Pentagon.

2.   Beyond that Hallett is also suggesting that the federal government define liability for lives lost and property damaged when the hijacked airliners crashed.

3.   Beyond that, Hallett is also suggesting that the federal government define liability for lives lost and property damaged when the hijacked airliners crashed.

4.   A fourth airliner crashed in rural Pennsylvania, apparently after passengers attacked the hijackers.

5.   But news that a U.S. airliner had crashed brought an immediate thought that the nation had been attacked by terrorists again.

6.   Probably an airliner had crashed on takeoff.

7.   She awoke to the news that a commercial airliner had crashed into the World Trade Center.

8.   The fourth airliner crashed in western Pennsylvania as passengers wrestled hijackers for control of the plane.

9.   The jets arrived minutes after the airliner crashed, briefly circled the smoking site and were back at their bases within hours.

10.   Two hijacked airliners crashed into the World Trade Center and toppled its twin towers, killing thousands of Americans.