Michael Brus, 48, of Hinckley, Illinois, was one of four workers killed in a mass shooting at the Navistar International Corp. diesel engine plant in Melrose Park on February 5, 2001. The attack occurred inside the plant when a former employee, identified as William D. Baker, entered armed with multiple firearms concealed in a golf bag and opened fire. Four workers died and four others were wounded in the incident.

Baker had been convicted in a scheme to steal diesel engines and parts from Navistar and was due to begin a prison sentence the following day. He had worked at the plant for 39 years before being fired in 1994. The shooting was described as linked to his conviction and loss of employment.

What details about Michael Brus’s life or his time at Navistar might help paint a fuller picture of who he was for readers or investigators?