Businessman and engineer Norm Winningstad, United Parcel Service CEO D. Scott Davis, and Judi Hofer, executive CEO of The May Department Stores Company are also graduates. Business magnate and co-founder and chairman of Nike, Inc., Phil Knight was an assistant professor of business at the university, and his son, animator and CEO of Laika, Travis Knight, is an alumnus. Carolyn Davidson, an alumnus of the university's visual arts department, invented the Nike swoosh while she was a student there. Tarah Wheeler, cybersecurity executive and author of Women In Tech, received her MS in Political Science from the Hatfield School.