immediately throughout Vietnam and that there should be no more U.S. military involvement in Vietnam. Also, there should also be a return of all captured personnel of the parties, and most importantly the U.S. must agree on South Vietnam's right to self determine their own government. On March 12 of 1975 an anti-aircraft missile from North Vietnam struck an Air Vietnam DC-4 that was en route from Vientiane to Saigon, shortly after the aircraft communicated for the last time over a reporting point (PE9 on the G67 airway) near Pleiku. The ARVN had fallen apart partially due to the North Vietnamese offensive, but it was not the sole reason. Since the North Vietnamese had been attacking everything, including B-52s and naval vessels, they had grown stronger and the South appeared to get weaker. The headquarters had tried to get information pertaining to Thieu's "grand design" on March 20. Headquarters decided to work on the responsibilities with the Communists and to gain support for the refugees that were moving away from the Communists. See also United States–Vietnam relations Allegations of CIA drug trafficking#Golden Triangle (Southeast Asia) CIA Activities by Transnational Topic: Crime and Illicit Drug Trade References External links Declassified CIA documents CIA and the Generals, Covert Support to Military Government in South Vietnam CIA and the House of Ngo, Covert Action in South Vietnam, 1954–63 CIA and Rural Pacification Good Questions, Wrong Answers CIA's Estimates of Arms Traffic through Sihanoukville, Cambodia, During the Vietnam War. The Way We Do Things, Black Entry Operations into North Vietnam Undercover Armies, CIA and Surrogate Warfare in Laos CIA collection of Vietnam War documents released under the Freedom Of Information Act Air America Air America, Upholding the Airman's bond Stories of Sacrifice and Dedication Civil Air Transport, Air America, and the CIA Political history of Vietnam United States–Vietnam military relations Vietnam War Vietnam