Vice Adm. Collin Green, Deputy Commander of U.S. Special Operations Command, is piped ashore, for the last time, during his retirement ceremony at Naval Special Warfare Command. - Vice Adm. Collin Green, Deputy Commander of U.S. Special Operations Command, is piped ashore, for the last time, during his retirement ceremony at Naval Special Warfare Command. Green celebrated 38 years of Naval service in the presence of family, friends, and teammates. Naval Special Warfare is the U.S. Navy’s special operations force, uniquely positioned to extend the Fleet's reach and gain access for the Joint Force in strategic competition.