John C. Walker, a 46-year-old White male, was working as an undercover narcotics officer on November 30, 1979, in Tucson, Arizona. On that Friday, he was involved in an operation targeting a cocaine case. While sitting in his vehicle at Tucson International Airport, he was fatally shot. The incident was a sudden and violent end to his undercover work.
Shortly after the shooting, law enforcement apprehended a suspect, 28-year-old Genaro Celaya. During the arrest, authorities found Celaya i
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