Cossacks in Krasyana Polyana. during the Sochi 2014 Winter Olympics in Sochi, Russia on 6th Feb., 2014. LEHTIKUVA / Markku Ulander *** FINLAND OUT. NO THIRD PARTY SALES. ***

Cossacks in Krasyana Polyana. during the Sochi 2014 Winter Olympics in Sochi, Russia on 6th Feb., 2014. LEHTIKUVA / Markku Ulander *** FINLAND OUT. NO THIRD PARTY SALES. ***

Cossacks in Krasyana Polyana. during the Sochi 2014 Winter Olympics in Sochi, Russia on 6th Feb., 2014. LEHTIKUVA / Markku Ulander *** FINLAND OUT. NO THIRD PARTY SALES. ***

Cossacks and me in Krasyana Polyana. during the Sochi 2014 Winter Olympics in Sochi, Russia on 6th Feb., 2014. LEHTIKUVA / Markku Ulander *** FINLAND OUT. NO THIRD PARTY SALES. ***

Cossacks in Krasyana Polyana. during the Sochi 2014 Winter Olympics in Sochi, Russia on 6th Feb., 2014. LEHTIKUVA / Markku Ulander *** FINLAND OUT. NO THIRD PARTY SALES. ***

A tent for security personnel is seen prior to the 2014 Winter Olympics, Wednesday, Feb. 5, 2014, in Krasnaya Polyana, Russia. (AP Photo/Gregorio Borgia)

A security worker takes a photo of the Olympic torch in Olympic Park as preparations continue for the 2014 Winter Olympics, Wednesday, Feb. 5, 2014, in Sochi, Russia. (AP Photo/Charlie Riedel)

A security worker takes a photo of the Olympic torch in Olympic Park as preparations continue for the 2014 Winter Olympics, Wednesday, Feb. 5, 2014, in Sochi, Russia. (AP Photo/Charlie Riedel)

Security personnel walk through Olympic Park in preparation for the 2014 Winter Olympics, Wednesday, Feb. 5, 2014, in Sochi, Russia. (AP Photo/Julie Jacobson)

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, Feb. 5, 2014. (AP Photo/Gero Breloer)

A Cossack stands on guard as people try to get a glimpse of the Olympic torch as it makes it's way throughout the streets of the Rosa Khutor ski resort in Krasnaya Polyana, Russia at the Sochi 2014 Winter Olympics, Wednesday, Feb. 5, 2014. (AP Photo/Christophe Ena)

SOCHI, Russia - Japanese athletes watch Japan's national flag being raised at a ceremony for their entry into the Olympic Village in Sochi, Russia, on Feb. 2, 2014. (Kyodo)

A military helicopter hovers over the mountain cluster as a passenger jet passes by prior to the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. With militant groups threatening to attack during the next few weeks, security and the safety of competitors and visitors to the coastal area and in the nearby mountains that will host the events has become both heightened and inescapable. (AP Photo/Dmitry Lovetsky)

Unidentified cross country skiers pass by a security camera as a security guard watches them as they train prior to the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dmitry Lovetsky)

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, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Gero Breloer)

A member of the security team watches over the sliding center during women's luge training at the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Natacha Pisarenko)

Russian security personnel patrol Olympic park ahead of the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Sochi, Russia. (AP Photo/Christophe Ena)

Russian security personnel patrol Olympic park ahead of the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Sochi, Russia. (AP Photo/Christophe Ena)

Russian security personnel patrol Olympic park ahead of the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Sochi, Russia. (AP Photo/Christophe Ena)

A handout picture taken during the Sochi 2014 Winter Olympic torch relay on February 3, 2014, and released by the Sochi 2014 Winter Olympics Organizing Committee shows the horsemen wearing traditional costumes of Russia's North Caucasus riding to welcome the Olympic flame in Maykop, the capital city of the Republic of Adygea. Russian torchbearers has started in October 2013 the history's longest Olympic torch relay ahead of Winter Games in Sochi, which will take the flame across the country through all 83 of its regions, including extreme locales such as Chukotka, the remote region in Russia's Far East, the turbulent North Caucasus, and even Russia's European exclave Kaliningrad. AFP PHOTO / SOCHI 2014 ORGANIZING COMMITTEE RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / SOCHI 2014 ORGANIZING COMMITTEE" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS-

A bank of security cameras hang from a pole in Olympic Park as preparations take place for the 2014 Winter Olympics, Monday, Feb. 3, 2014, in Sochi, Russia. (AP Photo/Patrick Semansky)

Armed security guards walk at the Olympic Park of the Sochi 2014 Winter Olympics in Sochi, Russia on Monday, 3rd Feb., 2014. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***

Armed security guards at the Olympic Park of the Sochi 2014 Winter Olympics in Sochi, Russia on Monday, 3rd Feb., 2014. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***

Armed security guards walk at the Olympic Park of the Sochi 2014 Winter Olympics in Sochi, Russia on Monday, 3rd Feb., 2014. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***

Russian soldiers stand during the welcome ceremony for the Philippine Olympic team in the Athletes Village at Olympic Park ahead of the 2014 Winter Olympics in Sochi, Russia, Sunday, Feb. 2, 2014. The games run from Feb. 7-23. (AP Photo/Alexander Demianchuk, Pool)

Russian soldiers stand during the welcome ceremony for the Philippine Olympic team in the Athletes Village at Olympic Park ahead of the 2014 Winter Olympics in Sochi, Russia, Sunday, Feb. 2, 2014. The games run from Feb. 7-23. (AP Photo/Alexander Demianchuk, Pool)

A security guard stands at Olympic Park in Sochi, Russia, Sunday, Feb. 2, 2014. Sochi will host the 2014 Winter Olympic Games from Feb. 7 to Feb. 23. (AP Photo/Alexander Demianchuk, Pool)

A security guard salutes toward an Olympic flag and flags of the United Nations and countries participating in the 2014 Winter Olympics, Saturday, Feb. 1, 2014, in the Athletes Village in Sochi, Russia. The opening ceremony for the games will be held on Feb. 7. (AP Photo/Antonin Thuillier, Pool)

A guard stands at attention in front of the Olympic flag and flags of the United Nations and countries participating in the 2014 Winter Olympics, Saturday, Feb. 1, 2014, in the Athletes Village in Sochi, Russia. The opening ceremony for the games will be held on Feb. 7. (AP Photo/Antonin Thuillier, Pool)

SOCHI, Russia - Police officers stand guard at a hand luggage security check area at Sochi train station in Sochi, Russia, on Jan. 28, 2014, ahead of the Feb. 7 opening of the Winter Olympic Games in the Black Sea resort. (Kyodo)

Russian police inspect a tunnel on the road between and Krasnaya as increased security measures are put into place ahead of the 2014 Winter Olympics, Thursday, Jan. 30, 2014, in Krasnaya Polyana, Russia. Outdor snow sports and sliding track events will take place in Krasnaya Polyana. (AP Photo/Luca Bruno)

A Russian Cossack walks across the bridge, Thursday, Jan. 30, 2014, in Krasnaya Polyana outside the Black Sea resort of Sochi, Russia, where the snow and sliding sports venues for the 2014 Winter Olympics are located. (AP Photo/Jae C. Hong)

Russian Cossacks stand guard, Thursday, Jan. 30, 2014, in Krasnaya Polyana outside the Black Sea resort of Sochi, Russia, where the snow and sliding sports venues for the 2014 Winter Olympics are located. (AP Photo/Jae C. Hong)

Russian security personnel wait for deployment in the Olympic Park as security measures continue to be implemented for the 2014 Winter Olympics, Thursday, Jan. 30, 2014, in Sochi, Russia. (AP Photo/Pavel Golovkin)

Russian Cossacks soldiers stand guard on a bridge at the ski resort Rosa Khutor in Krasnaya Polyana outside the Black Sea resort of Sochi, Russia, where the snow and sliding sports venues for the 2014 Winter Olympics are located. (AP Photo/Gero Breloer)

Russian Cossacks soldiers stand guard on a bridge at the ski resort Rosa Khutor in Krasnaya Polyana outside the Black Sea resort of Sochi, Russia, where the snow and sliding sports venues for the 2014 Winter Olympics are located. (AP Photo/Gero Breloer)

Russian Cossacks soldiers stand guard on a bridge at the ski resort Rosa Khutor in Krasnaya Polyana outside the Black Sea resort of Sochi, Russia, where the snow and sliding sports venues for the 2014 Winter Olympics are located. (AP Photo/Gero Breloer)

Russian Army soldiers wait for transportation, in Sochi airport, Russia, Monday, Jan. 27, 2014. Russia has spent about $51 billion to deliver the Winter Olympics in Sochi, which runs from Feb. 7-23. (AP Photo/Pavel Golovkin)

Russian Army soldiers wait for transportation, in Sochi airport, Russia, Monday, Jan. 27, 2014. Russia has spent about $51 billion to deliver the Winter Olympics in Sochi, which will run from Feb. 7-23. (AP Photo/Pavel Golovkin), APTOPIX

People wait for transportation, in Sochi airport, Russia, Monday, Jan. 27, 2014. Russia has spent about $51 billion to deliver the Winter Olympics in Sochi, which will run from Feb. 7-23. (AP Photo/Pavel Golovkin)

Russian Cossacks direct a visitor in Sochi airport, Russia, Monday, Jan. 27, 2014. Russia has spent around $51 billion to deliver the Winter Olympics in Sochi, which will run from Feb. 7-23. (AP Photo/Pavel Golovkin)

A female officer watches her sniffing dog playing with a stray dog near Sochi airport, Russia, Monday, Jan. 27, 2014. Russia has spent about $51 billion to deliver the Winter Olympics in Sochi, which run Feb. 7-23. (AP Photo/Pavel Golovkin)

Visitors arrive in Sochi airport, Russia, Monday, Jan. 27, 2014 as police officers talk aside. Russia has spent about $51 billion to deliver the Winter Olympics in Sochi, which run Feb. 7-23. (AP Photo/Pavel Golovkin)

Police stop a vehicle to check a documents in Sochi airport, Russia, Monday, Jan. 27, 2014 as police officers talk aside. Russia has spent about $51 billion to deliver the Winter Olympics in Sochi, which run Feb. 7-23. (AP Photo/Pavel Golovkin)

A lone policeman patrols the emptied Olympic Park near the Adler Arena Skating Center late at night in Sochi, Russia, Monday, Jan. 27, 2014. Security is tight across the Olympic area in the days leading up to the start of the winter games. (AP Photo/Pavel Golovkin)

Security officers search people entering a stadium before the Sochi 2014 Winter Olympic torch relay in Makhachkala, the capital of Russia's troubled southern republic of Dagestan, on January 27, 2014. Insurgents based in North Caucasus republics such as Dagestan who are seeking their own independent state have vowed to disrupt the upcoming Sochi Games in a bid to undercut President Vladimir Putin. AFP PHOTO / NEWS TEAM / SERGEI RASULOV

Police officers guard a stadium, the site of the Sochi 2014 Winter Olympic torch relay, in Makhachkala, the capital of Russia's troubled southern republic of Dagestan, on January 27, 2014. Insurgents based in North Caucasus republics such as Dagestan who are seeking their own independent state have vowed to disrupt the upcoming Sochi Games in a bid to undercut President Vladimir Putin. AFP PHOTO / NEWS TEAM / SERGEI RASULOV

A Russian police officer searches a driver as his vehicle is also screened at an entrance to the Sochi 2014 Olympic Winter Games park, Thursday, Jan. 23, 2014, in Sochi, Russia. The Olympics begin on Feb. 7. (AP Photo/David J. Phillip)

A Russian police officer searches a vehicle at an entrance to the Sochi 2014 Olympic Winter Games park, Thursday, Jan. 23, 2014, in Sochi, Russia. The Olympics begin on Feb. 7. (AP Photo/David J. Phillip)

Russian police officers search a vehicle at an entrance to the Sochi 2014 Olympic Winter Games park, Thursday, Jan. 23, 2014, in Sochi, Russia. The Olympics begin on Feb. 7. (AP Photo/David J. Phillip)

A Russian police officer searches a driver as his vehicle is also screened at an entrance to the Sochi 2014 Olympic Winter Games park, Thursday, Jan. 23, 2014, in Sochi, Russia. The Olympics begin on Feb. 7. (AP Photo/David J. Phillip)

SOCHI, Russia - Police officers check luggage at a gate before an ice hockey friendly at the Olympic Park in Sochi, Russia, on Dec. 21, 2013. The Winter Games will be held in the Black Sea resort from Feb. 7 to 23, 2014. (Kyodo)

SOCHI, Russia - Photo shows police officers with dogs on a street in Sochi, Russia, on Jan. 6, 2014. The Winter Olympic Games will be held in the Black Sea resort from Feb. 7 to 23. (Kyodo)

SOCHI, Russia - Photo shows police officers at Sochi station in Sochi, Russia, on Dec. 31, 2013. The Winter Olympic Games will be held in the Black Sea resort from Feb. 7 to 23, 2014. (Kyodo)

SOCHI, Russia - A police officer stands guard during an event in Sochi, Russia, on Dec. 31, 2013. The Winter Olympic Games will be held in the Black Sea resort from Feb. 7 to 23, 2014. (Kyodo)

Russian police officers watch out at a check point on the outskirts of Sochi, on Jan. 7, 2014. The Sochi Games are now one month away. ( The Yomiuri Shimbun via AP Images )

Security has tightened at a check point on the outskirts of Sochi, on Jan. 7, 2014. The Sochi Games are now one month away. ( The Yomiuri Shimbun via AP Images )

Local police officers check and watch out passengers and tourists at Sochi Station in Sochi, Russia, on Dec. 31, 2013. A suicide bombing and explosion occurred in Volgograd, have thretened the security ahead of the Sochi Olympics in February 2014. ( The Yomiuri Shimbun via AP Images )

SOCHI, Russia - A police officer checks the luggage of a passenger at a station in Sochi, Russia, on Dec. 30, 2013. An explosion occurred on a trolleybus the same day in the southern city of Volgograd, where a suicide bombing took place the previous day. (Kyodo)

Local police officers check and watch out passengers and tourists at Sochi Station in Sochi, Russia, on Dec. 30, 2013. A suicide bombing and explosion occurred in Volgograd, have thretened the security ahead of the Sochi Olympics in February 2014. ( The Yomiuri Shimbun via AP Images )

Local police officers check and watch out passengers and tourists at Sochi Station in Sochi, Russia, on Dec. 30, 2013. A suicide bombing and explosion occurred in Volgograd, have thretened the security ahead of the Sochi Olympics in February 2014. ( The Yomiuri Shimbun via AP Images )

Local police officers watch out at Sochi Olympic Park in Sochi, Russia, on Dec. 30, 2013. A suicide bombing and explosion occurred in Volgograd, have thretened the security ahead of the Sochi Olympics in February 2014. ( The Yomiuri Shimbun via AP Images )

Local police officers watch out passengers and tourists at Sochi Station in Sochi, Russia, on Dec. 30, 2013. A suicide bombing and explosion occurred in Volgograd, have thretened the security ahead of the Sochi Olympics in February 2014. ( The Yomiuri Shimbun via AP Images )

Local police officers check and watch out passengers and tourists at Sochi Station in Sochi, Russia, on Dec. 30, 2013. A suicide bombing and explosion occurred in Volgograd, have thretened the security ahead of the Sochi Olympics in February 2014. ( The Yomiuri Shimbun via AP Images )

Police car in Sochi, on December 19th, 2013. LEHTIKUVA / Heikki Saukkomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

A police car in Sochi, Russia, on December 19, 2013. LEHTIKUVA / Heikki Saukkomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

An armed Russian security guard stands at the ski resort Rosa Khutor, where the snow and sliding sports venues for the 2014 Winter Olympics are located, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dita Alangkara)

An armed Russian security guard stands at the ski resort Rosa Khutor, where the snow and sliding sports venues for the 2014 Winter Olympics are located, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Dita Alangkara)

Russian police officers watch the ski jumping competition at the FIS Ski jumping Cup in Sochi, Russia, Saturday, Dec. 8, 2012. (AP Photo/Dmitry Lovetsky)