London Olympic Closing

Portugal's Nuno Delgado, right, dances with performers during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Jae C. Hong)

London Mayor, Boris Johnson, second from left, watches as the International Olympic Committee President Jacques Rogge, center, hands the Olympic flag to the Mayor of Rio de Janeiro, Eduardo Paes, right, during the Closing Ceremony of the 2012 Summer Olympic on Sunday, Aug. 12, 2012, in London. (AP Photo/Jeff J Mitchell, Pool)

Fireworks explode during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Alastair Grant)

A performer poses for a photograph during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Jae C. Hong)

British swimmer Hannah Miley throws confetti up in the air during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Jae C. Hong)

Fireworks explode over the Olympic Stadium at the closing ceremony of the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Ben Curtis)

Dancers gather on the stage after the Olympic flame was extinguished during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Alastair Grant)

Fireworks explode during the Closing Ceremony of the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Bullit Marquez)

The Olympic rings stand illuminated over the Olympic flame during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Alastair Grant)

Fireworks explode during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Alastair Grant)

Fireworks explode during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Martin Meissner)

In this photo taken with a fisheye lens, French athletes watch pyrotechnics illuminating the sky above the Olympic Stadium during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Matt Dunham)

In this photo taken with a fisheye lens, performers pose for a photograph during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Matt Dunham)

British singer Jessie J performs with Brian May, guitarist of the British rock band Queen, during the Closing Ceremony at the 2012 Summer Olympics, Sunday, Aug. 12, 2012, in London. (AP Photo/Matt Slocum)

The Olympic flame burns during the Closing Ceremony at the 2012 Summer Olympics, Sunday, Aug. 12, 2012, in London. (AP Photo/Julio Cortez)