 From June 1971 until April 1975, the 31st MAU conducted many deployments to the waters off Vietnam.The 31st MAU was then directed to the Gulf of Thailand for Operation Eagle Pull, the American Embassy evacuation by air of Phnom Penh, Cambodia, which took place on 12 April 1975.This was followed by the 31st MAU's participation in Operation Frequent Wind on 29 April 1975 which was the final evacuation of Saigon as North Vietnamese forces entered the city.