Austrian alpine skiers (LtoR) Georg Streitberger, Klaus Kroell, Max Franz, Joachim Puchner, Romed Baumann pose in the Olympic Rings on February 4, 2014 at the Mountain Olympic Village at the Rosa Khutor Alpine centre, four days prior to the start of the 2014 Sochi Winter Olympic Games. (Photo by Fabrice Coffrini/AFP Photo)

Members of the German Speed Skating team skate during a training session ahead of the Sochi Winter Olympics at Adler Arena on January 31, 2014 in Sochi, Russia. (Photo by Robert Cianflone/Getty Images)

Athletes practice during training for the Moguls Competition at the Extreme Park at Rosa Khutor Mountain on February 3, 2014 in Sochi, Russia. (Photo by Mike Ehrmann/Getty Images)

Fireworks are seen as spectators arrive for the rehearsal of the opening ceremony at the Fisht Olympic Stadium at the 2014 Winter Olympics, Saturday, February 1, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

Workers stand atop the cauldron ahead of the Sochi 2014 Winter Olympics at Olympic Park on February 2, 2014 in Sochi, Russia. (Photo by Paul Gilham/Getty Images)

The Caucasus Mountains, site of the 2014 Winter Olympic outdoor snow sport and sliding track events, rise above a recently built housing complex, at left, near the Olympic Park by the Black Sea in the Coastal Cluster, Saturday, February 1, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

Norwegian biathlete Vetle Sjaastad Christiansen, left, trains as his coach records him at Laura Cross-country Ski & Biathlon Center ahead of the 2014 Winter Olympics, Monday, February 3, 2014, in Krasnaya Polyana, Russia. (Photo by Felipe Dana/AP Photo)

Spectators arrive for the rehearsal of the opening ceremony at the Fisht Olympic Stadium, rear, at the 2014 Winter Olympics, Saturday, February 1, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

Biathletes train at Laura Cross-country Ski & Biathlon Center ahead of the 2014 Winter Olympics, Monday, February 3, 2014, in Krasnaya Polyana, Russia. (Photo by Felipe Dana/AP Photo)

The Olympic flame is reflected in a puddle while lit during a test in the Olympic Park for the upcoming 2014 Winter Olympics as a pedestrian passes by, Friday, January 31, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

Volunteers walk near the alpine ski course of the Sochi 2014 Winter Olympics, Saturday, February 1, 2014, in Krasnaya Polyana, Russia. (Photo by Luca Bruno/AP Photo)

A testing of a water light show is conducted at the Olympic cauldron as the Bolshoy Ice Dome stands at left at the 2014 Winter Olympics, Saturday, February 1, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

The ski jumping venue of the 2014 Winter Olympics is illuminated, Monday, February 3, 2014, in Krasnaya Polyana, Russia. (Photo by Dmitry Lovetsky/AP Photo)

The Caucasus Mountains, site of the 2014 Winter Olympic outdoor snow sport and sliding track events, rise in the background as a woman takes a picture along the Black Sea outside the Olympic Park, Monday, February 3, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

Members of the Slovenian Cross-country ski team ski in front of Olympic rings at Laura Cross-country Ski & Biathlon Center of the 2014 Winter Olympics, Sunday, Feb. 2, 2014, in Krasnaya Polyana, Russia. (Photo by Gero Breloer/AP Photo)

China's biathlete Tang Jialin trains at Laura Cross-country Ski & Biathlon Center ahead of the 2014 Winter Olympics, Monday, Feb. 3, 2014, in Krasnaya Polyana, Russia. (Photo by Felipe Dana/AP Photo)

Workers on the Extreme Park are seen ahead of the Sochi 2014 Winter Olympics on February 2, 2014 in Rosa Khutor, Sochi. (Photo by Julian Finney/Getty Images)

A picture taken on January 3, 2014, shows Russia's President Vladimir Putin visiting the mountain Laura Cross Country and Biathlon Centre near the Black Sea resort of Sochi. Sochi will host the 2014 Winter Olympics that start on February 7, 2014. (Photo by Alexei Nikolsky/AFP Photo/RIA-Novosti)

In this view from the top of a mountain, the Black Sea stretches out in the distance from near the start of the men's downhill ski course ahead of the 2014 Winter Olympics, Monday, February 3, 2014, in Krasnaya Polyana, Russia. (Photo by Alessandro Trovati/AP Photo)

Fireworks are shot over the Bolshoy Ice Dome at the conclusion of a rehearsal for the opening ceremony at the 2014 Winter Olympics, Saturday, February 1, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

Athlete residences are seen from the path to the olympic village complex prior to the start of the 2014 Sochi Winter Olympics on February 1, 2014 in Sochi. (Photo by Antonin Thuillier/AFP Photo)

A gondola makes its way toward the Rosa Khutor Alpine Center, a venue for alpine skiing at the 2014 Winter Olympics, Friday, January 31, 2014, in Krasnaya Polyana, Russia. (Photo by Jae C. Hong/AP Photo)

A man checks a bicycle in the athletes olympic village in the seaside cluster prior to the start of the 2014 Sochi Winter Olympics on February 1, 2014 in Sochi. (Photo by Antonin Thuillier/AFP Photo)

A volunteer jumps in the air as she poses for her friend at Gorky Gorod 960 prior to the Sochi 2014 Winter Olympics at the Mountain Cluster in Sochi, Russia. Bobby Brown of the United States trains during Ski Slopestyle practice at the Extreme Park at Rosa Khutor Mountain, on February 3, 2014. (Photo by Getty Images)

Paint is sprayed on the slopestyle course at the Rosa Khutor Extreme Park, Rosa Khutor Extreme Park, Sochi, Russia, on ebruary 3, 2014. (Photo by Andrew Milligan/PA Wire)

Two PETA Supporters protest against the wearing of fur at the Olympic Park in Sochi, Russia, on February 4, 2014. (Photo by David Davies/PA Wire)

Rosa village is seen from a gondola prior to the 2014 Winter Olympics, Tuesday, February 4, 2014, in Krasnaya Polyana, Russia. (Photo by Jae C. Hong/AP Photo)

Russian pole vault star Yelena Isinbayeva signs the Olympic Wall of Truce during a visit at the Olympic Village on February 4, 2014 in Sochi before the start of the 2014 Sochi Winter Olympic Games. (Photo by Alexander Nemenov/AFP Photo)

A biathlete trains during sunset at Laura Cross-country Ski & Biathlon Center ahead of the 2014 Winter Olympics in Krasnaya Polyana, Russia, on February 3, 2014. (Photo by Felipe Dana/Associated Press)

Water is poured on the ice during a short track speed skating training session, and Kaetlyn Osmond of Canada participates in a figure skating practice session at the Iceberg Skating Palace in Sochi, on February 4, 2014. (Photo by Associated Press)

A worker climbs the roof of the Bolshoy ice dome, home to the ice hockey events in the seaside cluster prior to the start of the 2014 Sochi Winter Olympics on February 2, 2014 in Sochi. (Photo by Alexander Nemenov/AFP Photo)

Workers check the Olympic cauldron at the Olympic Park's medals plaza in the seaside cluster prior to the start of the 2014 Sochi Winter Olympics on February 2, 2014 in Sochi. (Photo by Alexander Nemenov/AFP Photo)

Workers check the Olympic cauldron at the Olympic Park's medals plaza in the seaside cluster prior to the start of the 2014 Sochi Winter Olympics on February 2, 2014 in Sochi. (Photo by Alexander Nemenov/AFP Photo)

Fireworks are shot over Fisht Olympic Stadium, right, and Adler Arena, left, at the conclusion of a rehearsal for the opening ceremony at the 2014 Winter Olympics, Saturday, February 1, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

A member of Canada's women's ice hockey team walks in Olympic Park after her practice session ahead of the 2014 Winter Olympics, Tuesday, February 4, 2014, in Sochi, Russia. (Photo by Petr David Josek/AP Photo)

A worker is dwarfed against the sky as he stands at the top of the Olympic cauldron ahead of the 2014 Winter Olympics, Tuesday, February 4, 2014, in Sochi, Russia. (Photo by Wong Maye-E/AP Photo)

Railway passengers take photos in front of the Olympic Rings at the Olympic Park train station ahead of the upcoming 2014 Winter Olympics, Wednesday, February 5, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)

Russian security forces stand guard as the Olympic torch makes it's way through the streets of the Rosa Khutor ski resort in Krasnaya Polyana, Russia at the Sochi 2014 Winter Olympics, Wednesday, February 5, 2014. (Photo by Gero Breloer/AP Photo)

A Russian security forces K-9 officer patrols with his dog near the finish area of the Alpine ski course ahead of the 2014 Sochi Winter Olympics, Tuesday, February 4, 2014, in Krasnaya Polyana, Russia. (Photo by Gero Breloer/AP Photo)

Members of the USA delegation pose for a picture with some mascots during a welcoming ceremony at the 2014 Winter Olympics, Thursday, February 6, 2014, in Sochi, Russia. (Photo by Morry Gash/AP Photo)