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U.S. swimmers Gunnar Bentz (L) and Jack Conger leave the police station at Rio de Janeiro International Airport on August 17, 2016
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Photo of U.S. Olympic Swimmer Ryan Lochte
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Saudi Arabia's Sarah Attar runs in her women's 800m round 1 heat at the London 2012 Olympic Games at the Olympic Stadium August 8, 2012.
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South Korean Olympic athletes and models show the South Korean Olympic team uniforms for the 2016 Rio Olympic Games at the Korean National Training Center in Seoul
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Olympic mascots are seen at the Sambadrome in Rio de Janeiro's Sambadrome Feb.7, 2016.
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The logos of the Rio 2016 Olympic Games and Rio 2016 Paralympic Games are pictured next to a message on a screen that reads 'Message about Zika' during a media briefing in Rio de Janeiro, Brazil, Feb. 2, 2016.
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Eduardo Paes (C), the mayor of Rio de Janeiro gives the keys of the city to mascots of the Rio 2016 Olympic and Paralympic Games, accompanied by the President of the Brazilian Olympic Committee and head of the Rio 2016 Olympic Games Carlos Nuzman (2nd L) and President of the Brazilian Paralympic Committee Andrew Parsons. (Photo: REUTERS/Pilar Olivares)
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Michael Phelps reacts after placing seventh in the 100m freestyle in the 2014 USA National Championships, August 6, 2014 (Photo: Reuters)