Question: The USS "Phelps" along with the cruiser "Chester", escorted a vessel that served as the flagship for the commander of what?
Sentence (from "USS Phelps (DD-360)"): In November 1936 "Phelps", along with the cruiser "Chester", escorted the heavy cruiser "Indianapolis" carrying President Franklin D. Roosevelt to Buenos Aires, Argentina for the opening of the Inter-American Peace Conference of 1936.
Relevant evidence: Yes