Destroyers of the US Atlantic Fleet not participating in the fleet exercises according to the Weekly Intelligence Summary No. 43 dated 29 October 1921

The destroyers of the US Atlantic Fleet which would not attend the exercises of the combined Atlantic and Pacific Fleets at Panama between 27 January and 22 April, stayed with 50% decreased crews behind at Charleston, South Carolina.

Source

The National Archives, Kew Gardens, England CAB-24-129-57