 In addition to Otilio Osorio, a Texas-based drug and gun trafficker, Manuel Barba, was involved in trafficking another of the guns recovered in the Zapata shooting.The timeline of this case, called "Baytown Crew", shows guns were allowed to walk during surveillance that began June 7, 2010.On August 20, 2010, Barba received a rifle later recovered in the Zapata ambush and sent it with nine others to Mexico.