Ooops: The fifth Olympic ring fails to deploy in the early moments of the Opening Ceremony at the Fisht Olympic Stadium in Sochi, Russia, Friday. Yuri Kadobnov/AFP/Getty Images hide caption

itoggle caption Yuri Kadobnov/AFP/Getty Images

Sasha Feachem (right) will be performing in an urban street dance during the London Olympics' opening ceremony Friday. Tom Goldman/NPR hide caption

itoggle caption Tom Goldman/NPR