In Phnom Penh on Friday (26 March) more American military aid was unloaded from the South Vietnamese landing ship, Vung Tau. The supplies included 24 armoured personnel carriers and other vehicles from stockpiles in South Vietnam. 336 Cambodian officers and men also arrived on the Vung Tau. They had completed a ten-week course in Saigon learning how to handle the vehicles. Some of the vehicles are expected to be used to defend Highway Four, which links the capital of Phnom Penh with the country's only deep water port, Kompong Som. Heavy fighting continues along this route, with soldiers of the People's Republic of North Vietnam reported to control parts of the highway.