. >> this attorney represented one, naudimar herrera. >> it was more like -- it was more like a movie script. >> and herrera says he and the others just played along because they were promised lots of money by assad. >> anybody who is blinded by greed will actually -- you know what i'm saying will be vulnerable to this guy's intelligence. >> another damming piece of evidence was surveillance tapes the group's leader made of possible targets in miami including the fbi offices there. all suggested it turns out by assad. is that your job? to suggest targets? >> sometimes you have to see what he's willing to do, what he's capable of doing. >> but many authorities question the true value of such fbi undercover stings. since 9-11 they have largely targeted people who are more aspirational than operational. >> a lot of the cases after-911 were announced by great trumpets by the fbi director so we felt they were doing something, when in fact what they were doing was not helpful, not relevant, not needed. >> and according to assad, the focus on the undercover stings led the fbi to this chance