On 18 November, she got underway from Long Beach to return to the Orient. Following a four-day layover at Pearl Harbor and brief fuel stops at Midway and Guam, she arrived in Subic Bay on 11 December. After a five-day availability alongside , the destroyer stood out of Subic Bay bound for Danang, South Vietnam, and gunfire support duty off the coast of the I Corps zone. By New Year's Day 1970, she was on her way to Yankee Station to act as plane guard for Task Force (TF) 77 aircraft carriers. On 4 January, she headed back to Subic Bay where she remained until the 18th. She completed another three-week tour on the gunline on 10 February and then shaped a course for Sasebo, Japan, whence she operated until early in March. After a liberty call in Hong Kong, "Turner Joy" returned to the Vietnamese coast and resumed gunfire support missions until early April. On 3 April, she rendezvoused with and then made port calls at Subic Bay and Bangkok, Thailand, before embarking upon her final gunline assignment on 19 April. She returned to Subic Bay on 10 May for a final visit before heading back to the United States on the 17th.