The Truth About Guns has been following the ATF’s Gunwalker Scandal for some time. That’s the name given by Gun Rights Examiner writer David Codrea to the stink surrounding the revelation that the Bureau of Alcohol, Tobacco, Firearms and Explosives (and Really Big Fires) allowed smugglers to purchase guns in the United States—and failed to intervene in their journey down the so-called Iron River to Mexico. (Codrea was riffing on the name of the ATF’s interdiction efforts: Project Gunrunner.) The scandal got serious when smugglers used one of those guns to murder U.S. Border Patrol Agent Brian Terry. Allegations of an ATF coverup ensued. And now we learn that Mexican drug thugs used another Gunwalker gun to murder ICE Special Agent Zapata. Time to sort out who did what when, who knew what when, and what’s going to happen now.