 She embarked men and equipment of the Army's 1st Engineering Battalion and transported them to Vietnam.She completed the task on 7 March and then made another transport run from 14 March 1966 to 26 March 1966, carrying American troops from Naha to Saigon, South Vietnam.After coastal operations off Vietnam from 27 March to 5 May, "Terrell County" retired to Japan on one shaft, since her starboard shaft had ceased functioning.