Located just on the edge of Saigon, Tan Son Nhut handled the majority of South Vietnamese commercial and military air traffic throughout the war. Tan Son Nhut was the headquarters of the South Vietnamese Air Force and after 1962, headquarters for the U.S. Second Air Division. It was in charge of all American air operations in South Vietnam. Between 1966 and 1973, the Seventh Air Force assumed control of those operations. Tan Son Nhut was also known as "Pentagon East" because the headquarters of the U.S. Military Assistance Command, Vietnam (MACV) was located there. On April 29, 1975, after the evacuation of several thousand Americans and Vietnamese, military demolition teams destroyed MACV Headquarters. The airport there was later rebuilt by North Vietnamese and Soviet engineers to serve the commercial and military needs of Ho Chi Minh City, formerly Saigon.