The purported head of Zeta operations in Reynosa was formally charged with organized crime and firearms violations, Mexico's attorney general's office said Monday. A federal judge in Mexico City ordered that Jaime "El Hummer" González Durán remain in custody pending trial. Federal authorities arrested González during a series of Nov. 7 raids in Reynosa and later fought off Cartel gunmen who chased them to the city's airport as they attempted to fly him out of the city. The raids also uncovered the largest cache of illegal weapons ever found in Mexico. Investigators believe the weapons belonged to González's organization, which...