Fireworks explode during the opening ceremony of the 2014 Sochi Winter Olympic Games at Fisht stadium February 7, 2014. (Photo: Reuters)

Fireworks are seen over the Olympic Park at the end of the opening ceremony of the 2014 Sochi Winter Olympics, February 7, 2014.
(Photo: Reuters)

Dancers perform during the opening ceremony of the 2014 Winter Olympics in Sochi, Russia, Friday, Feb. 7, 2014. (Photo: AP )

U.S. team members parade during the opening ceremony of the Sochi 2014 Winter Olympics February 7, 2014. (Photo: Reuters)

Dancer Svetlana Zakharova performs during the opening ceremony of the Sochi 2014 Winter Olympics at Fisht stadium, February 7, 2014. (Photo: Reuters )

Performers dance during the opening ceremony of the Sochi 2014 Winter Olympics, February 7, 2014. (Photo: Reuters)

Fireworks explode after the Olympic Cauldron is lit during the opening ceremony of the 2014 Sochi Winter Olympics, February 7, 2014. (Photo: Reuters)

A man and a woman pose for a photograph underneath the Olympic rings in front of the Olympic Cauldron in the Olympic Park at the end of the opening ceremony of the 2014 Sochi Winter Olympics February 7, 2014. (Photo: Reuters)

Performers dance during the opening ceremony of the 2014 Sochi Winter Olympic Games at Fisht stadium February 7, 2014. (Photo: Reuters)

Conor Lyne of Ireland carries his country flag as the Irish team arrives during the opening ceremony of the 2014 Winter Olympics in Sochi, Russia, Friday, Feb. 7, 2014. (Photo: AP)