When Graham Martin, the U.S. ambassador to South Vietnam, suggested that most Vietnamese refugees should head to coastal points, where American ships would attempt to pick them up, Mr. Rosenblatt and Mr. Johnstone, both of whom had served in diplomatic postings in Vietnam, grew alarmed at his seeming indifference toward the Vietnamese who were not high-ranking officials. So they secretly devised their own evacuation plan to assist former colleagues and their families.
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