Edgar (Pop) Buell (USAID Area Coordinator, Xieng Khouang) and Head Nurse Choua Thao of Sam Thong's San Sook Hospital by the USAID Quonset hut office which used to be a warehouse, with some people holding small national flags on the occasion of a visit by Prime Minister Souvanna Phouma. Sam Thong was the USAID refugee operations center for northeastern Laos from 1962 until its fall on March 20, 1970.