http://www.csmonitor.com/2005/0810/p02s01-ussc.html?s=hns
"Analysts point out that the nature of Al Qaeda has changed so much in the light of aggressive law enforcement tactics since 9/11 that the traditional 'sleeper cell' model may no longer be attractive to al Qaeda here in the US. As a result, capturing potential terrorists may be the best thing the FBI can be doing right now."
