A policeman guides tourists and citizens to get on the overbridge near the National Stadium, known as the Bird's Nest, in Beijing, China, at about 3:00 p.m. on Aug. 8, 2008, 5-hour countdown to the opening ceremony of the Olympics. The opening ceremony of the Beijing 2008 Olympic Games will be held in the National Stadium at 8:00 p.m. on Aug. 8. [Li Ziheng/Xinhua]