Chief Collision Technology expands PDR network across U.S.Chief’s team of hail damage experts can set up a hail site at no cost and manage all aspects of repair, including Constellation, the industry's first touchless mobile 3D hail damage scanning system. Chief Collision Technology expands PDR network across U.S. By Staff/Wire Reports on March 2, 2022 Network provides total management of hail damage repair while eliminating cost and training required to staff a CAT site.