called atf headquarters. >> most agents didn't know about fast and furious. those who did followed orders. >> it was reveal to do me they didn't have to explain to me i was to do what i was told. >> the agent blew the whistle after the murder of brian terry. it ended the program but not the karnage in mexico. this lawyer the brother of former state attorney general tortured and killed 21 dead in the shoot out the helicopter downed near mexico city all crimes committed with guns sent to mexico with u.s. government consent. >> the guns we saw these individuals buy would end upturning up at crime scenes in the united states and new mexico and yet we still did nothing. >> nothing while fast and furious guns showed up at the hands of the lafamilia and drug cartel. >> it confirmed what many mexicans believe there's a conspiracy from the united