Dr. Jennings career has focused on developing excellent diagnostic skills and providing clinical care of the highest quality. His training at Yale University included lengthy exposure to many of the leading experts in the world, including Drs. Rosai, LiVolsi, Carter, and Merino, with each of whom he also did published research. This training and his subsequent experience over 30 years as an attending in three academic institutions has enabled him to serve as a resource to his colleagues in many areas of surgical pathology, and stimulated his interest most especially in endocrine, head and neck, bone and soft tissue and pulmonary pathology.