 From 25 December 1964 when "Daniel Boone" departed Guam on the first Polaris deterrent patrol in the Pacific until October 1981 when "Robert E. Lee" returned to Pearl Harbor from the last Polaris deterrent patrol, 23 different SSBNs completed 398 Polaris deterrent patrols in the Pacific in support of the United States strategic defense.On 30 September 1981, Submarine Squadron Fifteen ended its eighteen-year existence when it was disestablished in ceremonies on board "Proteus" in Apra Harbor, Guam.In a reactivation ceremony on board on 23 February 2001, Captain Jose R. Corpus, USN, became commander of Submarine Squadron Fifteen, formerly commander of Submarine Group Seven Representative Guam.