Michael M. Konz, 25, was killed in a workplace shooting at the General Dynamics plant in San Diego on January 24, 1992. Konz worked at the plant as a labor negotiator and was fatally shot when a former employee, Robert Mack, entered the facility and opened fire following his termination after 23 years on the job.

The shooter’s family and court testimony described Mack as suffering stress and depression after losing his position; Mack later claimed to have unknowingly smoked cigarettes laced with cocaine and said he experienced a blackout during the incident. Plant supervisor Jim English was also shot and later died of his injuries 12 years afterward. Mack was arrested and convicted of Konz’s murder and the attempted murder of English; he was sentenced to a lengthy prison term.

The shooting prompted the General Dynamics plant to tighten security, and the case has continued to raise questions about workplace safety and recognition of acute mental health crises after job loss. If anyone worked at the plant then or has information about Michael Konz, please share what is known.