From what I read in the media the actually detonated the bombs. The fact that FBI sold them faulty equipment doesn’t seem like much of a set-up. It is a godsend.
Hey, I got a terrific bridge in Brooklyn I’ll sell you cheap. You will make a fortune in tolls.
You should find, and read, the FBI complaint on these guys. Their original plan was to create a diversion, then knock down the big signs on the tops of corporate buildings.
The complaint is out there.