 Her overhaul in New York—which lasted from 23 September to 10 March 1948—was followed by refresher training at Guantanamo Bay.The summer of 1948 was devoted to midshipman and reserve training cruises.Also in 1948, "Missouri" became the first battleship to host a helicopter detachment, operating two Sikorsky HO3S-1 machines for utility and rescue work.