FILE - In this April 29, 1975, file photo, a South Vietnamese mother and her three children stand on the deck of an amphibious command ship being plucked out of Saigon by U.S. Marine helicopters in Vietnam. The war ended on April 30, 1975, with the fall of Saigon, now known as Ho Chi Minh City, to communist troops from the north. Seeing their community’s story in the plight of those boarding tiny, rickety boats for Europe, some Vietnamese-Americans are reaching out to help. In addition to the 4-mile walk, some in California have started a Twitter campaign to generate compassion for those taking to the seas and a fundraising drive to support migrant rescue efforts. (AP Photo/File)