 In the early months of 1977, the Indonesian navy ordered missile-firing patrol-boats from the United States, Australia, the Netherlands, South Korea, and Taiwan, as well as submarines from West Germany.In February 1977, Indonesia also received thirteen OV-10 Bronco aircraft from the Rockwell International Corporation with the aid of an official US government foreign military aid sales credit.The Bronco was ideal for the East Timor invasion, as it was specifically designed for counter-insurgency operations in difficult terrain.