1.   But investigators say that they assume that the hijackers had some flying skills.

2.   But investigators have said that other hijackers had papers urging them to prepare themselves for prison.

3.   But one passenger told the driver in Spanish that the hijacker did not have a gun.

4.   Evidence that the hijackers had ties to Middle East terrorist organizations emerged within hours of the attacks Tuesday morning, sources said.

5.   For his part, Tsonas said he believed that the hijackers probably did have anthrax.

6.   For his part, Tsonas said he believes the hijackers probably did have anthrax.

7.   If the hijackers did have anthrax, they would probably have needed an accomplice to mail the tainted letters, said bioterrorism experts knowledgeable about the case.

8.   If the hijackers did have anthrax, they probably would have needed an accomplice to mail the tainted letters, according to bioterrorism experts knowledgeable about the case.

9.   Mueller said the FBI believes that the names and photos used on the list released on Thursday reflect the identities the hijackers had before entering the United States.

10.   Officials say the first clues to the identity of those responsible pointed to five suspects, and there were suggestions that the hijackers had Islamic connections.