re: not catching those responsible for 9/11
Organizers, participants, and financiers of 9/11 currently in custody:
Khalid Sheik Mohammed
Abu Zubaydah
Ramzi Binalshibh
Riduan Isamuddin
Ali Abdul Aziz Ali
Tawfiq bin Attash (also organized the Cole bombing)
Zacarias Moussaoui
Mohammed Haydar Zammar
Naturally, this doesn't include the ones on the planes.
