Ralph E. Williams, PhD, D-ABFE, is a Professor of Entomology at Purdue University and the Director of the Purdue Forensic Science Program. His area of focus is with arthropods of public health and veterinary importance and forensic entomology. As a veterinary entomologist, his emphasis is placed on addressing the continuous need for development of pest management strategies relative to the protection and productivity of livestock and poultry.