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

2.   Her husband, Thomas Jr., was among the men who attacked the hijackers.

3.   That plane crashed in rural Pennsylvania after passengers apparently attacked the hijackers.

4.   He described how the pilot urged passengers to use books, glasses, shoes and other instruments to attack hijackers.

5.   A fourth hijacked airliner crashes in Pennsylvania after passengers attack the hijackers.