nine more shots went into body, as he lay on the ground in his hometown, nogales mexico. the bullets fired from the top of this cliff in arizona traveled through an international boundary, and into a legal vacuum. the agent has never been named. >> jose antonio was found on the sidewalk. the report clearly indicate that he did not have any type of weapon in his hand, any type of rock. any type of... nothing he had a cell phone in his pocket!! why did the border patrol shoot jose antonio elena rodriguez? and why are questions involving his death met with silence? tonight, fault lines examines the nations largest law enforcement agency and asks who is holding them accountable when they pull the trigger. >> people here call this ambos nogales, or both nogales. but a steel fence built in the name of national security divides this border town. i've come to meet jose's family they live just blocks from where jose was killed. >> his brother diego worked at a shop in the center of town. jose would often meet him to help mop the floor before closing. that night, he never made it.