Bạch Đằng River
During President Ngô Đình Diệm's regime, political dissent intensified. As a result, on February 27, 1962, Quốc and his wingmate Nguyễn Văn Cử, who were flying A-1 Skyraiders, turned away from their routine military operation and headed to Saigon, where they bombed the Independence Palace, which resulted in the knocking down a corner of the palace. However, President Diem and his family managed to escape death. Quốc's plane was hit by the anti-aircraft fire over Bạch Đằng River and he was forced to land on the Saigon River, near a security post in the Nha Be gas depot. He was arrested and imprisoned at Chi Hoa Prison, while Nguyễn Văn Cử escaped to Cambodia and took refuge there.