 During this tour, Walker was advanced to the newly created rank of senior chief petty officer in 1961 and at the relatively young age of 34, reached the pinnacle of the enlisted ranks and was promoted to master chief on November 16, 1963.Walker began his second tour of shore duty in 1964 as Director of Training, Radarman “A” School, Great Lakes, Illinois.Three years later, he reported aboard the destroyer at Newport, Rhode Island, where he was assigned various command duties including senior enlisted advisor and leading chief for combat systems training at the Fleet Combat Direction Systems Training Center, Dam Neck, Virginia.