 Complete the following phrase:  With elements of the 1st Marine Provisional Brigade embarked, Gunston Hall departed San Diego 1 July 1950 and reached Pusan, Korea, via Yokosuka 3 August. Disembarking the Marines, she took aboard 30 stretcher cases and returned to Osaka, Japan. On 10 September Gunston Hall sailed from Japan to participate in the amphibious operation 