Olympic flag in Rio de Janeiro

President of Rio 2016 Commite, Carlos Arthur Nuzman, Mayor of Rio de Janeiro, Eduardo Paes, and atlhetes of Brazil arrive at the international airport of Rio de Janeiro with the Olympic flag, Rio de Janeiro, Brazil, August 13, 2012. (Austral Foto/Renzo Gostoli)

President of Rio 2016 Commite, Carlos Arthur Nuzman, Mayor of Rio de Janeiro, Eduardo Paes, third from left, and atlhetes of Brazil arrive at the international airport of Rio de Janeiro with the Olympic flag, Rio de Janeiro, Brazil, August 13, 2012. (Austral Foto/Renzo Gostoli)

President of Rio 2016 Commite, Carlos Arthur Nuzman, right, and Mayor of Rio de Janeiro, Eduardo Paes, left, and atlhetes of Brazil arrive at the international airport of Rio de Janeiro with the Olympic flag, Rio de Janeiro, Brazil, August 13, 2012. (Austral Foto/Renzo Gostoli)

President of Rio 2016 Commite, Carlos Arthur Nuzman, Mayor of Rio de Janeiro, Eduardo Paes, Rio de Janeiro's Governor Sergio Cabral and atlhetes of Brazil arrive at the international airport of Rio de Janeiro with the Olympic flag, Rio de Janeiro, Brazil, August 13, 2012. (Austral Foto/Renzo Gostoli)