1975 – In Cambodia, the U.S. ambassador and his staff leave Phnom Penh when the U.S. Navy conducts its evacuation effort, Operation Eagle. On April 3, 1975, as the communist Khmer Rouge forces closed in for the final assault on the capital city, U.S. forces were put on alert for the impending embassy evacuation. An 11-man Marine element flew into the city to prepare for the arrival of the U.S. evacuation helicopters. On April 10, U.S. Ambassador Gunther Dean asked Washington that the evacuation