Early in 1967, "Waddell" was again engaged off the Vietnamese coastline. From 2 March to 21 May 1967, the ship displayed "exceptional readiness and effectiveness in all tasks assigned," including gunfire support off South Vietnam; interdiction of North Vietnamese supply traffic along the coast; and gunfire against selected targets in North Vietnam. Coming under hostile fire from shore on one occasion, "Waddell" returned the fire and inflicted maximum damage on enemy shore batteries while emerging without harm. During her second WestPac deployment in Vietnamese waters, the destroyer fired some 2,000 rounds of ammunition while winning the reputation of being "the busiest ship in the Tonkin Gulf" before heading home.