Opening Ceremony fireworks at Maracana

Fireworks explode above the stadium during the opening ceremony of the Rio 2016 Olympic Games at the Maracana stadium in Rio de Janeiro on August 5, 2016. (AFP)

The word "Rio" is spelled out in fireworks during the opening ceremony. (AFP)

Fireworks are seen over Maracana Stadium during the opening ceremony at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Friday, Aug. 5, 2016. (AP)