CBS Chicago/LinkedIn The suspected gunman from the shooting at an manufacturing plant in Aurora, Illinois, on Friday afternoon has been identified as Gary Martin, a 45-year-old former employee. Five employees were killed and five police officers were injured in the shooting. Martin was killed during the incident. Here's what we know about Gary Martin. The suspected gunman from the shooting at an manufacturing plant in Aurora, Illinois, on Friday afternoon has been identified as Gary Martin, a 45-year-old former employee of the Henry Pratt Company. Five employees were killed and five police officers were injured in the shooting.