"On This Date in Cryptologic History" Calendar
1963: Intercept operations began at Phu Bai
3 February 1963: Intercept operations began at Phu Bai. Became the largest U.S. site in South Vietnam.
"On This Date in Cryptologic History" Calendar
3 February 1963: Intercept operations began at Phu Bai. Became the largest U.S. site in South Vietnam.