A Thai-registered airliner taxis at Nakhon Phanom Royal Thai Air Force Base, a key staging field for U.S. Air Force Special Operations, search-and-rescue, and forward air control units during the Vietnam War. Joint-use bases like NKP hosted both American military aircraft and Thai civil and military traffic, reflecting the close U.S.-Thai cooperation that supported air operations over Laos and North Vietnam throughout the conflict. Project: 219023