The roots of Southeast Asia's billion-dollar drug trade [are] hidden in the picturesque place in northern Thailand, home to only a few hundred people and high up in the hills of the Golden Triangle, which also straddles Myanmar and Laos. This surge in Southeast Asia's narcotics trade was also achieved with at least some input from America's Central Intelligence Agency (CIA). Keen to prevent Mao's Communist message from spreading into Burma, and from there mainland Southeast Asia, the CIA offered support to ... exiled Chinese nationalists, including transportation assistance through Civil Air Transport " the CIA-owned airline that would later become the notorious Air America, which transported U.S. supplies and forces into Vietnam, and the secret war in Laos. Burmese military intelligence reports at the time also noted that the nationalist troops were sporting brand-new American arms in the form of machine guns, bazookas, mortars, and anti-aircraft artillery. A declassified CIA cable from the era said the troops who settled in Mae Salong became the "dominant opium traffickers in the region", and that the move to the hilltop village had proven a "boon" for their activities, by allowing them to develop networks in Thailand. A series of brutal campaigns throughout the 1970s brought the Communist threat in the area to an end, and Mae Salong's residents shifted from producing opium to tea and mushrooms.