of the subjects struck agent terry. agent terry's fellow agents attempted to administer first aid to him, but unfortunately, he died at the scene. >> reporter: it turns out terry had confronted some of the border's most dangerous bandits, criminals who rob drug runners at gunpoint. two assault rifles recovered at the scene were traced back to the atf operation fasted and furious that had gone terribly wrong. atf had allowed low-level gun runners to buy weapons in arizona and smuggle them into mexico with hopes it would lead them to cartel leaders. authorities have been secretly trying to hunt these suspects down in mexico for months, but after that failed they decided to offer the $1 million reward to generate new leads. pierre thomas, abc news. news out of london where formal terrorism charges have been filed against three men taken into custody last week. they were arrested near london's olympic park. british authorities say they were not planning an attack against the games themselves.