On April 28, 1965, HMM-264 conducted the Marine Corps' first night all-helicopter assault into an unsecured landing zone during combat conditions in Santa Domingo, Dominican Republic from the deck of the USS BOXER during Operation Power Pack. Between HMM-264 and the LSTs more than 600 civilians were evacuated from the Embajador Hotel. This event marked the first landing of U.S. Marines on Dominican soil since the early 1930s. It was also the first ship-to-shore heliborne lift over a hostile beach without supporting units ashore. Over the course of the operation, the American embassy was secured and over 1,750 American citizens were evacuated from the war-torn Dominican Republic.