CHICAGO - Trevor Wehner was working his first day as a human resources intern at Henry Pratt Company in Aurora, Illinois, when a worker who had just been fired killed him and four of his colleagues.
Friday's (Feb 15) shooting rampage at the water distribution products factory and warehouse west of Chicago also killed the plant's manager and its head of human resources.
Police said the gunman later died in shootout with police.
Wehner, 21, from the village of Sheridan, Illinois, was on track to graduate in May from Northern Illinois University (NIU) with a degree in human resource management, the school said.
A friend of the family said he was a great role model and like a big brother to many boys in their small community.
"I want HIS name and picture shared not that of a cold calculated killer!!" the friend, Cindy Lou, wrote on Facebook alongside a photo of Wehner in a suit and tie.
Also among the victims was Clay Parks, the plant's human resources manager and a resident of Elgin, Illinois.
He joined Henry Pratt in November last year, after graduating in 2014 from NIU's College of Business.