The Olympic Stadium floodlights are officially switched on by Britain's Prime Minister David Cameron, centre at lectern, at the Olympic Park in Stratford, London, Monday Dec. 20, 2010. Prime Minister Cameron pushed a button that switched on the towering floodlights over the snow-covered stadium in east London on Monday evening. London Mayor Boris Johnson, Olympic organizing chief Sebastian Coe and dozens of local schoolchildren were among those attending the ceremony in freezing temperatures inside the mostly empty 80,000-capacity stadium. (AP Photo/Rebecca Naden, Pool)