1.   As a crowd looked on, another airliner struck the south tower, exploding and setting it ablaze.

2.   Underlying that is lime rock, which the airliner presumably struck.

3.   When the airliners struck, Gov. George Pataki was en route from his home in Garrison to visit a sick girl at Columbia-Presbyterian Center in Washington Heights.

4.   Parnevik was in New York when the two hijacked airliners struck the World Trade Center and said he was still shocked by what he saw.

5.   However, he said, the jets were just lifting off when the airliner struck.