Certor Sports, the parent company of Seattle-based football helmet maker Vicis Inc., is moving its headquarters to Plainfield, Indiana. Although Certor Sports is opening a 230,000-square-foot manufacturing facility and headquarters in Plainfield, located just outside Indianapolis, the company is keeping a research, development and innovation center in Seattle. Jim Heidenreich, who was announced as Certor's CEO on Thursday along with the headquarters move, said the center in Seattle will test all...