The upper floors (5-9) were on fire after the second tower collapse.

The circumstances regarding the tower collapse are unknown.

The tower collapse also destroyed the transmitter building.

On Sept. 11, he commandeered a bus with some other officers, and died under the first tower collapse while digging out a fellow officer.

Ms. Layeni-Yee's mother whirled around to see the tower collapse on television.

He saw the south tower collapse as he guided a vessel at top speed toward downtown to help out.

At one point while he was at St. Vincent's, he looked up and saw the second tower collapse.

Could they have made the tower collapse?

As he headed north, he saw the first tower collapse.

The tower collapse also destroyed the transmitter building but no one was hurt in either incidents.