Tet 1969 refers to the attacks mounted by the People's Army of Vietnam (PAVN) and Viet Cong (VC) in February 1969 in South Vietnam during the Vietnam War, one year after the original Tet Offensive. Most attacks centered on military targets near Saigon and Da Nang and were quickly beaten off. Some speculate that the attacks were mounted to test the will of the new U.S. President Richard Nixon who retaliated by secretly bombing PAVN/VC sanctuaries in Cambodia the following month. Numerous bases were attacked, these attacks were all beaten back but did inflict casualties and reinforced the fact that PAVN/VC forces were able to mount attacks at will. Long Binh/Bien Hoa Intelligence had indicators of the pending attacks. On 19 February, a defector surrendered to Army of the Republic of Vietnam (ARVN) forces and revealed a large VC force would attack key installations in the Saigon area to include Long Binh Post. Unfortunately, the reporting was delayed and did not reach Long Binh until the morning of 22 February 1969, the day the defector warned the attacks were set to begin. After sundown on the 22nd, elements of the VC 274th Regiment, 5th Division made their final preparations while occupying three hills along Highway 15 approximately three kilometers south of the base. That evening, several ambush squads from the 720th Military Police Battalion, 18th MP Brigade kept watch along potential avenues of approach to Long Binh Post. One of the MP ambush squads held a position within a kilometer of the VC stronghold. At 02:00 on 23 February, the 274th VC Regiment initiated their attack with an estimated 78 rounds of rocket and mortar fire from their positions. The rounds landed on post with some igniting the POL fuel site east of the highway. The VC made several attempts to advance on the base, but were halted. Full-scale sweeping operations to secure the perimeter began just after noon that day. M113 armored personnel carriers and M551 Sheridan armored reconnaissance vehicles supported the forces on the ground while AH-1 Cobra gunships and OH-6 helicopters provided air support. These units made occasional contact, often with PAVN or VC who fought stubbornly from trenches and spider holes. In the early morning hours of 26 February, a force of approximately 400 men from the VC 275th Regiment, 5th Division, had infiltrated into the tiny village of Thai Hiep on the outskirts of Bien