General view of the huge audience at the opening of the first modern International Summer Olympic Games held at the Panathinaiko Stadium on April 6, 1896 in Athens, Greece. Standing in the front row are members of nine Greek military and navy bands and 150 choir singers that performed the Olympic Hymn. (AP Photo)

The commencement of the 1908 London Olympics Marathon at Windsor Castle, England, July 1, 1908. (AP Photo)

Olympics held at the Antwerp Stadium, showing the US contingent leading all the athletes in the procession around the field on August 26, 1920, after which they proceeded to lead all competition in the athletic events. (AP Photo)

Opening of the 1924 Olympics at Colombes Stadium, Paris, July 15, 1924. Competing athletes lined up on the field and the flags of all the competing nations formed a semi-circle around the veteran French athlete, G. Andre, taking the Olympic oath. (AP Photo)

Athletes march into the Olympic Stadium in Los Angeles in the opening ceremony of the Summer Olympic Games on July 30, 1932 . (AP Photo)

Opening ceremonies of the 1936 Olympics at the Lustgarten in Berlin, Germany, showing Nazi leaders including Dr. Joseph Goebbels speaking. Behind him is the Reich's Minister Rudolph Hess. (AP Photo)

John Mark of Cambridge University carries the Olympic torch during opening ceremonies for the games, July 29, 1948, at Wembley Stadium in London. (AP Photo)

The famous Finnish runner, Paavo Nurmi, lights the Olympic flame from the Olympic torch, during July 19, 1952 opening ceremony at the Helsinki, Finland. (AP Photo)

Teams assemble in Melbourne Stadium for the opening ceremonies of the Summer Olympic Games in Melbourne, Australia Nov., 22, 1956. (AP Photo)

The combined East and West German team marches into the Olympic Stadium in Rome, Italy on August 25, 1960, for the formal opening ceremony of the XVIIth Summer Olympic Games. (AP Photo)

Festivities at the opening ceremony of the 1964 Summer Olympics in Tokyo, Japan, Oct. 10, 1964. (AP Photo)

University City Olympic Stadium at Mexico City, Mexico 1968 site of the Nineteenth Olympiad, or the XIX Olympiad summer games. Athletes and spectators watch the release of balloons at the opening ceremony. (AP Photo)

Male dancers perform a Bavarian folk dance on August 26, 1972 during the opening ceremony of the Summer Olympic Games at the main Olympic Stadium in Munich, Germany. (AP Photo)

Opening ceremony of the games of the XXI Olympiad held in Montreal during the summer of July 17, 1976. (AP Photo)

Opening ceremony of the 1980 Moscow Summer Olympic Games, July 19, 1980. (AP Photo)

Five-foot high helium balloons are released by participants in the welcoming of nations during opening ceremonies at the Los Angeles Memorial Coliseum for the 1984 Summer Olympics. (AP Photo/Suzanne Vlamis)

The Olympic torch towers above the Olympic stadium in Seoul Sept. 17, 1988, during the opening ceremonies for the summer Olympic Games. A colorful spectacle mixing ancient Korean rituals with space-age technology kicked off 16 days of athletic competition. (AP Photo/Mark Duncan)

A ship "sails" through the Olympic Stadium in Barcelona, July 25, 1992 during opening ceremonies of the XXV Summer Olympic Games. The Barcelona skyline is in the backdrop. (AP Photo/Mark Duncan)

Performers are seen forming the Olympic rings and the 100 symbol to mark the Centennial Olympics during the opening ceremony of the 1996 Summer Olympic Games in Atlanta. (AP Photo/Michel Lipchitz)

Australian runner Cathy Freeman stands under the Olympic torch after lighting the flame at the opening ceremonies for the 2000 Summer Olympics in Sydney, Australia. (AP Photo/Kevin Frayer)

Fireworks explode at the conclusion of the Opening Ceremony of the 2004 Olympic Games in Athens. (AP Photo/Thomas Kienzle)

Dancers perform prior to the official opening ceremony for the Beijing 2008 Olympic Summer Games in Beijing's National Stadium, also known as the Bird's Nest. (AP Photo/Amy Sancetta)