He may have retired in September, but retired Adm. Mike Mullen’s legacy lives. An auditorium was dedicated in his name March 1 before a graduation ceremony at Surface Warfare Officers School in Newport, R.I. In speaking to Department Head Class 215, Mullen reflected on his own department head graduation and the training he received throughout his career, according to a Navy news release. Mullen, a former chairman of the Joint Chiefs and former chief of naval operations, also had kind words for the school: “Newport has always been a great Navy town and a big part of our family’s life.…