The War Against Trucks: Aerial Interdiction in Southern Laos 1968 - 1972, by Bernard C. Nalty
The Ho Chi Minh Trail, a maze of roads, trails, and waterways in eastern Laos, provided the conduit for supplies and replacements from North Vietnam to its forces fighting in South Vietnam. Transportation on the Trail grew from porters and bicycles to a truck fleet. The U.S. began to interdict these supplies from the air using a variety of aircraft and weapons.