Experience the moral dilemmas facing both U.S. and South Vietnamese soldiers as the North Vietnamese Army closed in on Saigon in April 1975, in this video adapted from Last Days in Vietnam | AMERICAN EXPERIENCE. Because the U.S. Ambassador to South Vietnam had refused to develop an evacuation plan for endangered South Vietnamese, several young officers in the embassy led “black ops”—operations that were against regulations—to evacuate as many South Vietnamese as possible.