There was high security around the federal courthouse in downtown Laredo as jury selection in the trial of an accused Zeta cartel hitman began this morning. On trial is 25-year-old Gerardo Castillo Chavez, but federal prosecutors say he is also known as Armando Garcia and "cachets." He's charged in the 2006 double homicide of Jesus Maria Resendez and his nephew, 15-year-old Mariano Resendez who were gunned down while stopped at a traffic light on Zapata highway. His previous case ended in a mistrial last year and included testimony from members of the Zetas. Chavez still faces drug conspiracy charges. Chavez's lawyers, however, say their client is not ‘Armando Garcia’ and does not know how prosecutors came up with that name. The trial is expected to resume tomorrow morning at 8:30.