Finally, the Torch is brought into the stadium, passed from athlete to athlete during the torch relay, until it reaches the last carrier; often a well-known athlete from the host nation, who lights the fire in the stadium's cauldron. Under IOC rules, the lighting of the Olympic cauldron must be witnessed by those attending the opening ceremony, implying that it must be lit at the location where the ceremony is taking place. Another IOC rule states that the cauldron should be witnessed outside by the entire residents of the entire host city. This was made evident during the opening ceremony for the 2010 Games in Vancouver. The venue chosen as the Olympic Stadium was BC Place, which at the time was an air-supported domed stadium. Since there was no way the cauldron could be displayed outside and also be seen at the stadium, two cauldrons were used. For the first torch lighting inside the stadium the organizers chose three-time speed skating medalist Catriona Le May Doan, Canadian Senator Nancy Greene, who won two medals for Canada at the 1968 Games, NBA star Steve Nash, a native of nearby Victoria, and hockey legend Wayne Gretzky, to each light one of four arms of the torch. Notably, Le May Doan's arm failed to rise; this was later rectified during the closing ceremony when she got a second chance to light her part of the torch and succeeded.