Brazilian firefighter Haudson Alves abseils with the Olympic flame as he attends the Olympic Flame torch relay at Mane Garrincha stadium in Brasilia, Brazil, May 3, 2016. REUTERS/Ueslei Marcelino TPX IMAGES OF THE DAY - RTX2CNNJ

Canoeist Rubens Pompeu takes part in the Olympic Flame torch relay at Paranoa lake in Brasilia, Brazil, May 3, 2016. REUTERS/Adriano Machado - RTX2CNBN

Indigenous people take part in the Olympic Flame torch relay at village Tupe, in Manaus, Amazonas state, Brazil, June 20, 2016. REUTERS/Bruno Kelly - RTX2HA0J

Brazil's Jose Batista holds the Olympic torch aloft as he rides his horse, during the torch relay in Brasilia, Brazil, May 3, 2016. REUTERS/Ueslei Marcelino TPX IMAGES OF THE DAY - RTX2CPEN

Brazil's President Dilma Rousseff (R) lights a cauldron with the Olympic Flame next to Fabiana Claudino, captain of the Brazilian volleyball team, during the Olympic Flame torch relay at Planalto Palace in Brasilia, Brazil, May 3, 2016. REUTERS/Ueslei Marcelino TPX IMAGES OF THE DAY - RTX2CMB4

Brazilian swimmer Jefferson Mascarenhas, takes part in the Olympic Flame torch relay in front of the Arena da Amazonia stadium in Manaus, Amazonas state, Brazil, June 19, 2016. REUTERS/Bruno Kelly - RTX2H1EK