American filmmaker Oliver Stone praised President Hugo Chavez on Friday as the Venezuelan leader launched a mission to airlift three hostages held by leftist rebels out of Colombia's jungles. Stone, who stood near Chavez as two Russian-made helicopters took off from an airfield in western Venezuela, said he was working on a film and hoped to accompany the humanitarian operation into Colombia. "I'm doing a documentary about Latin America and also about North America. You have to wait around to see it," Stone told reporters. He said he planned to take part in the mission, calling it a "beautiful, great process." "I'm hoping it works. I'm all for this," Stone said. "I've never been in such a thing. I'm very proud to be a part of this."