In 1971, "James E. Kyes" after several important exercises between Long Beach and Pearl Harbor, got under way for the Western Pacific on 19 March. Arriving in the Gulf of Tonkin and Vietnamese waters on 3 April, "James E. Kyes" plane guarded for the and steamed with the . On 11 May 1971, the ship again arrived in the Gulf and plane guarded for the ). After an exercise with ships from the Japanese Maritime Self Defense Force, the ship plane guarded for the USS "Ticonderoga" once again. However, this lasted only 2 days as "James E. Kyes" along with Destroyer Squadron 23 was detached on 17 June and ordered to Long Beach via Adak, Alaska for refueling. The "James E. Kyes" moored in Long Beach on 5 July ending a 3-month Westpac cruise. The "James E. Kyes" along with the rest of Desron 23, changed home ports on 1 September 1971 from Long Beach to San Diego, California due to the Navy's general administrative reorganization. On 5 June 1972, "James E. Kyes" departed San Diego for her 21st and final Westpac deployment. On 6 June, "James E. Kyes" rendezvoused with and escorted the carrier to the Gulf of Tonkin arrive on 22 June 1972. On 7 July, "James E. Kyes" began her first of several Naval Gunfire Support missions off South Vietnam. She also participated in Naval Gunfire Strikes off North Vietnam and still more firing missions of South Vietnam. In 1972, the ship spent 3 month in the war zone broken only by short upkeep and R&R periods in Subic Bay, Kaohsiung and Hong Kong. On 26 December 1972, "James E. Kyes" in company with destroyers , and departed Subic Bay for San Diego conducting extensive TYPE training exercises en route. "James E. Kyes" arrived in San Diego, California on 13 January 1973 thus ending her "Last at-sea period" as a commissioned United States Destroyer. "James E. Kyes" made 7 deployments to the Western Pacific and 19 tours to the Vietnam War zone. "James E. Kyes" was decommissioned, and on 31 March 1973 she was stricken from the Naval Vessel Register. On 18 April 1973, the ship was transferred to the Republic of China (Taiwan). She served in the Republic of China Navy as ROCS "Chien Yang" (), reclassified as a guided missile destroyer DDG-912.