Co Bao is seen paying Kinh to transport them down the river. When Rambo remarks that they are pirates, Co says that the pirates are the most reliable means of transport. Rambo didn't trust Kinh from the start. Kinh seemed friendly at first, allowing financial negotiations, offering Co a drink and showing Rambo where an RPG-7 was located on the boat. However, he soon proved to be a traitor. Kinh sold them out to the NVA, and the pirates point guns at them to make sure they don't go anywhere. Rambo is able to tolerate being struck by Kinh and after he calls Co a 'whore' in Vietnamese, but when he sees him slap Co, he loses it. Rambo stabs one of the pirates and uses him as a human shield when Kinh attempts to shoot him with his Yugoslavian Zastava M57. Rambo then uses the pirate's Remington