Gallery: Parade of nations at Olympic opening ceremony

Canada's athletes parade during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Dunham)

Great Britain's Chris Hoy carries the national flag as confetti surrounds the team during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Ukraine's Roman Gontiuk carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Professional basketball player LeBron James takes pictures with members of the the United States' Olympic team during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Slocum)

Syria's Olympic team arrives during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Slocum)

The Poland team parade during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/David Goldman)

Canada's Simon Whitfield carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Dunham)

Britain's Chris Hoy carries the national flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Portugal's Telma Monteiro carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/David Goldman)

Denmark's Kim Wraee Knudse carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Dunham)

Germany's Natascha Keller carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Charlie Riedel)

Jamaica's Usain Bolt carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Paul Sancya)

Jamaica's Usain Bolt carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Paul Sancya)

Athletes from Canada pose for photographers during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Dunham)

Netherlands' Dorian van Rijsselberghe carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Paul Sancya)

Canada's Simon Whitfield carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Ivan Sekretarev)

France's Laura Flessel-Colovic carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Lee Jin-man)

Senegal athletes parade during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/David Goldman)

Kuwait's Fehaid Aldeehani carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Serbia's Novak Djokovic carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Slocum)

The flag of Maldives is carried to it's place during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Charlie Riedel)

South Africa's Olympic team circles the stadium during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Charlie Riedel)

Spain's Pau Gasol carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Charlie Riedel)

India's Sushil Kumar carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Iran's Ali Mazaheri carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Iraq's Dana Abdul Razak carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Israel's Shahar Zubari carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

Japan's Saori Yoshida carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

South Korea's Kyung Shin Yoon carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Matt Dunham)

Athletes from Malaysia march in a parade during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)

United States's Mariel Zagunis carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Mark Humphrey)