A couple walks along Copacabana beach ahead of the upcoming 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, August 4, 2016. The iconic Copacabana beach will be the starting point for the road cycling race, marathon swimming and triathlon competitions during the Olympics. (Photo by David Goldman/AP Photo)





Workers continue to put the finishing touches to the Olympic Tennis Centre at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, August 4, 2016. (Photo by Ben Curtis/AP Photo)





Brazilian army soldiers patrol the city to prevent gangsters from torching more government vehicles just days before the Olympic Games open in Rio de Janeiro, in the northeastern city of Natal, Brazil, August 3, 2016. (Photo by Leo Carioca/Reuters)





Members of the contigents from Italy (ITA) and the Marshall Islands (MHL) watch and take pictures as a performer dances in Rio de Janeiro, Brazil on August 4, 2016. (Photo by Ivan Alvarado/Reuters)





Man photographs Rio 2016 Olympic Games insigniain Olympic Park, Brazil on August 4, 2016. (Photo by Nacho Doce/Reuters)





Members of the contigents from Italy (ITA) and the Solomon Islands (SOL) dance during the team welcoming ceremonies in Rio de Janeiro, Brazil on August 4, 2016. (Photo by Ivan Alvarado/Reuters)





Technicians work on the roof of the swimming venue at the Olympic Park, Brazil on August 4, 2016. (Photo by Phil Noble/Reuters)





Sailor Teau Moana McKenzie (COK) of Cook Islands (L) poses with a dancer during the welcoming ceremony for the country's contingent in Rio de Janeiro, Brazil on August 4, 2016. (Photo by Ivan Alvarado/Reuters)





A tattoo is seen on the back of weightlifter Luisa Peters (COK) of Cook Islands during the welcoming ceremony for the country's contingent in Rio de Janeiro, Brazil on August 4, 2016. (Photo by Ivan Alvarado/Reuters)





Weightlifter Luisa Peters (COK) of Cook Islands shows off a tattoo of the Olympic rings during the welcoming ceremony for the country's contingent in Rio de Janeiro, Brazil on August 4, 2016. (Photo by Ivan Alvarado/Reuters)





Athlete Tameka Williams (SKN) of Saint Kitts and Nevis poses for a picture during the team welcoming ceremonies in Rio de Janeiro, Brazil on August 4, 2016. (Photo by Ivan Alvarado/Reuters)





Alona Ribakova (LAT) of Latvia is pictured during the team welcoming ceremonies in Rio de Janeiro, Brazil on August 4, 2016. (Photo by Vasily Fedosenko/Reuters)





A man rests near a rower ahead of the Rio 2016 Olympic Games in Rio de Janeiro August 4, 2016. (Photo by Carlos Barria/Reuters)





Pin traders gather in Olympic Park ahead of the 2016 Rio Olympics in Rio de Janeiro August 4, 2016. (Photo by Kai Pfaffenbach/Reuters)





A pin trader shows a Christ the Redeemer Olympic pin ahead of the 2016 Rio Olympics in Rio de Janeiro August 4, 2016. (Photo by Kai Pfaffenbach/Reuters)





A soldier stands guard atop a vehicle in the Copacabana neighborhood, just a day before the opening ceremony of the Rio 2016 Olympic Games in Rio de Janeiro, Brazil, August 4, 2016. (Photo by Ruben Sprich/Reuters)





A woman paddles out near a boat off the Copacabana Beach a day before the opening ceremony of the Rio 2016 Olympic Games in Rio de Janeiro, Brazil, August 4, 2016. (Photo by Paul Hanna/Reuters)





A vendor peddles bikinis along Copacabana Beach a day before the opening ceremony of the Rio 2016 Olympic Games in Rio de Janeiro, Brazil, August 4, 2016. (Photo by Paul Hanna/Reuters)





Brazilian bikinis are displayed outside a shop near Copacabana beach in Rio de Janeiro on August 4, 2016 on the eve of the opening of the Rio 2016 Olympic Games. (Photo by Leon Neal/AFP Photo)





Navy vessels patrol the coast off of the famed Copacabana beach on August 2, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





Visitors gather in the plaza outside the newly constructed Museum of Tomorrow on August 2, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





Kids play soccer on Copacabana beach on August 2, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





A general view of the Rocinha favela, one of the slums that was included in the “police pacification unit” program that began in 2008, in Rio de Janeiro, Brazil, July 24, 2016. Picture taken July 24, 2016. (Photo by Bruno Kelly/Reuters)





Gabriel Luiz, 16, jumps into the Guanabara Bay near the new Museum of Tomorrow on August 2, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





People wait for the new metro line train in the city center with a mural by the artist Kobra on August 2, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





Visitors take their picture in front of the Olympic rings on Copacabana beach on August 3, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





Workers hustle to finish the sidewalks in the Porto Maravilha area, once dangerous slum, drug/crime area, now a re-development, with new museums, walkways, train line on August 2, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





A beach supply vendor walks the streets outside the beach volleyball venue at Copacabana Beach on August 3, 2016 in Rio De Janeiro, Brazil. (Photo by Jonathan Newton/The Washington Post)





Fireworks are tested for the opening ceremony of the Rio 2016 Olympic Games at the Maracana stadium in Rio de Janeiro, Brazil on August 3, 2016. (Photo by Yasuyoshi Chiba/AFP Photo)