Dr. Don Callan , Athletic Director Dr. Don Callan is in his 37th year at Cedarville College and his 36th season as the school's athletic director. He oversees a Yellow Jacket program that contains 13 varsity sports, plus continues his role as Chairman of the Health and Physical Education Department. Dr. Callan has been regarded as a well-respected leader at all levels of the athletic arena. yellowjackets.cedarville.edu