White Hmong people paying homage to King Savang Vatthana and Queen Khamphoui at the Sam Thong airstrip, with Prime Minister Souvanna Phouma (beret), Gen. Vang Pao (Vaj Pov) (Commander, Military Region II; red tassels), and Col. Phan Siharat (white suit) nearby. Sam Thong was the USAID refugee operations center for northeastern Laos from 1962 until its fall on March 20, 1970.