In early 1975, Rosenblatt was one of a small group of officers at the State Department who pushed for the evacuation of significant numbers of Vietnamese associated with the U.S. war effort in South Vietnam. With the North Vietnamese army advancing to capture Saigon, Rosenblatt and fellow diplomat L. Craig Johnstone were concerned about the slow place of evacuating Vietnamese who had worked for or with the United States in South Vietnam. In April, defying State Department orders, they flew to Saigon and arranged for the evacuation of 200 Vietnamese friends and colleagues.