LOL! Please don't take my post #11 personally.
Nick was the turkey. He thought he was working for these guys, just like dad. He was OK until the feds started snooping around. Sooner or later he would have led the FBI to some bad guys.
This 26 year old had just too many coincidental contacts with too many people in Oklahoma City, people conneted with 911, and people connected with AQs in Iraq. He was dangerous to AQ.