Groundzero - It wouldnt suprise me, given their direct links to almost all homegrown terror attacks back to the WTC 1993 attack.
The first 8 minutes of this youtube clip is pretty good (apologies if its already been posted) at summing up some of the wonderful things the FBI has been involved in, especially at around 3:35 where the FBI tried to radicalise a mentally unstable man who kept his own urine in jars around the apartment.
