On 4 January 1964, "Walker" commenced a two-week tender availability at Pearl Harbor with . On 31 January, the ship officially entered the Pearl Harbor Naval Shipyard for overhaul. The completion of yard overhaul on 30 April marked the commencement of local exercises in preparation for refresher training. On 19 May, "Walker" took part in the filming of the movie "None But The Brave" at the island of Kauai. After a month of refresher training and an administrative inspection, the escort destroyer underwent upkeep which took her through June.