1.   Other reports refer to holes in floors and collapsing ceilings.

2.   But my three colleagues were still inside the office when missile fragments, glass and debris from the collapsing ceiling sprayed through the room.

3.   But my three colleagues were still inside the office when shell fragments, glass and debris from the collapsing ceiling sprayed through the room.

4.   Recovery operations were halted Monday to let experts determine whether there was a danger of collapsing ceilings.