Fireworks over the Olympic Stadium and the Aquatics Arena during the Opening Ceremony at the Olympic Park on July 27, 2012 in London, England. (Photo by Mike Hewitt/Getty Images)

General View as fireworks illuminate the sky during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Ryan Pierse/Getty Images)

General View as fireworks illuminate the sky during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Ryan Pierse/Getty Images)

The fireworks at the Olympic Opening Ceremony. (WENN.com)

The Olympic cauldron burns after being lit during the Opening Ceremony at the 2012 Summer Olympics, Saturday, July 28, 2012, in London. (AP Photo/Jae C. Hong)

Steve Redgrave, right, holds the Olympic torch after entering the stadium during the Opening Ceremony at the 2012 Summer Olympics, Saturday, July 28, 2012, in London. (AP Photo/Matt Dunham, Pool)

Torchbearer Sir Steve Redgrave receives the Olympic Flame during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Alex Livesey/Getty Images)

LONDON, ENGLAND - JULY 27: Natascha Keller of the German Olympic hockey team carries her country's flag during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - JULY 27: Fireworks light up Tower Bridge as the London 2012 Olympics opening ceremony takes place on July 27, 2012 in London, England. Athletes, heads of state and dignitaries from around the world have gathered in the Olympic Stadium for the opening ceremony of the 30th Olympiad. London plays host to the 2012 Olympic Games which will see 26 sports contested by 10,500 athletes over 17 days of competition. (Photo by Peter Macdiarmid/Getty Images)

A general view is displayed while artists perform during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Paul Gilham/Getty Images)

The Ring lights up at the Opening Ceremony of the London 2012 Olympics (Photo by WENN.com)

LONDON, ENGLAND - JULY 27: The Red Arrows fly over Olympic Stadium during the Opening Ceremony for the 2012 Summer Olympic Games on July 27, 2012 at Olympic Park in London, England. (Photo by Elsa/Getty Images)

LONDON, ENGLAND - JULY 27: The sun sets over the Olympic Stadium prior to the Opening Ceremony for the 2012 Olympic Games on July 27, 2012 at Olympic Park in London, England. (Photo by Jamie Squire/Getty Images)

LONDON, ENGLAND - JULY 27: Former Prime Minister Gordon Brown and his wife Sarah look on ahead of the Olympic Games 2012 Opening Ceremony on July 27, 2012 in London, England. Athletes, heads of state and dignitaries from around the world have gathered in the Olympic Stadium for the opening ceremony of the 30th Olympiad. London plays host to the 2012 Olympic Games which will see 26 sports contested by 10,500 athletes over 17 days of competition. (Photo by John Stillwell - WPA Pool/Getty Images)