Who are the human faces of the U.S. government's botched Fast and Furious gun-walking operation?

The Untold Story Behind The Fast and Furious Scandal
3:00 | 09/27/12

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Transcript for Who are the human faces of the U.S. government's botched Fast and Furious gun-walking operation?
These -- the unknown faces of operation fast and furious. London. Bond sending its. Stadium that they have. The sting operation -- more than two. Weapons to disappear into the hands of criminals hundreds ended up in the hands of Mexican drug cartels. Left side of masterpiece islands group was -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- They risked lives on both sides of the border. 2000 weapons go. On accounted for only to be found at the scene Friday. Was kept secret I was stationed in Tijuana Mexico. I ask questions. Of any -- and world. Until an American -- It was -- in the line of fire this is that it -- first Christmas coming home. -- -- -- Most of whom were obviously we're a global food groups would we knew we would inevitably affect me. Dozens of people in Mexico were murdered -- weapons linked to operation fast and furious. Massacres that shook Mexico. Yeah. Vehicle. And so -- civilians. Remove customs couldn't. Fast and furious was not the only secret gun walking operations. -- Did they understand that these guns are all going to criminals. ATF allowed a total of 3500. Weapons to fall into the wrong hands. A potential disaster. Disaster in this case. Is the movement of deadly weapons across the border. -- used to carry out murders. I'm CEO at -- -- this the death. -- seen the evidence. Fast and furious arming enemies Sunday September 30 7 PM six cents.

This transcript has been automatically generated and may not be 100% accurate.

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