In the fall of 2009, the Department of Justice (DOJ) developed a risky new strategy to combat gun trafficking along the Southwest Border. The new strategy directed federal law enforcement to shift its focus away from seizing firearms from criminals as soon as possible--and to focus instead on identifying members of trafficking networks. The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) implemented that strategy using a reckless investigative technique that street agents call "gunwalking." ATF's Phoenix Field Division began allowing suspects to walk away with illegally purchased guns. The purpose was to wait and watch, in the hope that law enforcement could identify other members of a trafficking network and build a large, complex conspiracy case.