Photo: Portraits: Portrait Singles: 5D3_0637

Ed Byczynski, President and CEO of PLZ Aeroscience Corporation poses for a portrait at their distribution center in Addison, Il on July 31, 2015. Manuel Martinez/ Crains Chicago Business

Ed Byczynski, President and CEO of PLZ Aeroscience Corporation poses for a portrait at their distribution center in Addison, Il on July 31, 2015. Manuel Martinez/ Crains Chicago Business