1964–1966
1964–1966: Polaris and Gemini X
Deployed again to the Mediterranean from 1 October 1964 to 18 January 1965 and 19 August–7 December 1965, Norris served in Polaris support operations as a missile tracking ship from 1 to 15 April 1966, and in the primary recovery force for Gemini X from 12 to 23 July.

Intensified operations in Vietnam called her with other ships of Destroyer Squadron 20 and they left Newport on 4 October for Panama and Yokosuka, arriving on 10 November. As they had in Korea, her guns supported troops ashore, first driving back Viet Cong attempting to overrun Vũng Tàu on 21 November. After four months on the gunline giving major service in the struggle to keep South Vietnam free, Norris completed a circumnavigation by returning via Suez to Newport, arriving on 25 April 1967.
Following east coast and Caribbean operations, Norris returned to the Mediterranean on 29 April 1968 for duty through the summer months. Returning to Newport in the fall, she deployed again from 9 May through December 1969. Into 1970 she continued on rotation between the 2nd Fleet and 6th Fleet.







