Straits of Florida
"John J. Powers" returned to New York on 23 May 1945 and, after maneuvers in Casco Bay, Maine, arrived Miami, Florida, on 21 July for duty as a training ship. During August she provided tactical training for student officers in the Straits of Florida. The war over, "John J. Powers" sailed on 8 September 1945 for Charleston, South Carolina, where she decommissioned on 16 October 1945.