Two members of the U.S. Army lead the pack in the 5,000 meters at the U.S. Olympic Trials earlier this month in Eugene, Ore. Shadrack Kipchirchir (right), did not make the team in the 5,000, but did qualify in the 10,000. Paul Chelimo (second from right), qualifed in the 5,000. Tom Banse/Northwest News Network hide caption

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Fast-Track Program: Kenyan Runners Join U.S. Army — And Olympic Team

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Runners compete in the marathon at the 2012 Paralympics in London. The International Paralympic Committee said Friday it is investigating reports of widespread doping among Russia's disabled athletes and is considering banning the entire Russian team from the Paralympics in Brazil in September. Emilio Morenatti/AP hide caption

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New analysis of stored samples taken from athletes at the Beijing and London Summer Olympics has turned up 45 cases of banned substances. Here, urine samples are recorded upon arriving at the China Anti-Doping Agency in Beijing in 2008. Robert F. Bukaty/AP hide caption

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The fate of Russia's athletes for this summer's Olympics is cast further into doubt by a new setback. Here, Russian coaches and athletes are seen at the 2012 Summer Olympics in London. Sergei Grits/AP hide caption

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Russian cross-country skier Alexander Legkov, who won a gold and a silver at the 2014 Winter Olympics in Sochi, speaks at a news conference in May to deny allegations that dozens of Russian athletes were part of a state-run doping program. A detailed report by the World Anti-Doping Agency on Monday said the doping program was in place for years before and during the Olympics. Vasily Maximov/AFP/Getty Images hide caption

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Russian athletes compete at track and field championships in Cheboksary on June 20. The International Olympic Committee has banned Russia's track and field team from the Summer Games for pervasive doping violations. The IOC on Tuesday put off a final decision on whether to bar the entire Russian team from the games that begin in Brazil on Aug. 5. Francesca Ebel/AP hide caption

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Canadian law professor Richard McLaren speaks at a news conference Monday in Toronto. McLaren is the author of a new report that accuses Russia of a widespread doping campaign. Frank Gunn/AP hide caption

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Justin Gatlin celebrates victory in the 100 meters at the U.S. Olympic Trials for track and field. Gatlin has been suspended twice for failing doping tests, once in 2001 and again in 2006. Andy Lyons/Getty Images hide caption

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At The U.S. Olympic Trials, Mixed Opinions About Russian Doping Scandal

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Sharon Day-Monroe competes in the 100-meter hurdles portion of the heptathlon at the U.S. Track & Field Championships in Eugene, Ore., in 2015. She competes in the U.S. Olympic Trials this weekend as she tries to make her third consecutive Olympic team. Christian Petersen/Getty Images hide caption

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For Heptathlete Sharon Day-Monroe, It's 7 Events With Just One Goal

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Michael Phelps waves after receiving his gold medal in the men's 200-meter butterfly at the U.S. Olympic swimming trials in Omaha on Wednesday. He described it as the hardest swim of his career. With the victory, he qualified for his fifth Olympic Games, something no other male American swimmer has ever done. Orlin Wagner/AP hide caption

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Civil police officers in Rio de Janeiro threaten to go on strike during a June 27 demonstration against the government for arrears in their salary payments. Vanderlei Almeida/AFP/Getty Images hide caption

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With 5 Weeks To Go Until The Olympics, How Prepared Is Rio?

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Vashti Cunningham, 18, practices the high jump at the University of Nevada Las Vegas' Sheila Tarr Track on June 21. She set a world junior record in March and is expected to make the U.S. Olympic team this weekend. Bridget Bennett for NPR hide caption

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A Gifted High Jumper Gets Set To Leap Onto The World Stage

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Michael Phelps celebrates qualifying for his fifth Olympic Games, after winning the men's 200-meter butterfly at the U.S. Olympic swimming trials Wednesday in Omaha, Neb. Mark J. Terrill/AP hide caption

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Veteran Swimmer Michael Phelps And Newer Names Headed For Olympics

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Jason Pryor is the only U.S. men's epee fencer competing at the Olympics in Rio. He is currently ranked 38th in the world. Adrienne Grunwald for NPR hide caption

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'A Fantasy Of A Fantasy': U.S. Fencer Jason Pryor On Reaching The Olympics

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Three photos show the Olympic flame slowly extinguishing at London's Olympic Stadium, as the London 2012 Games come to an end. The next Summer Olympics will be in Rio de Janeiro, Brazil. Damien Meyer/AFP/Getty Images hide caption

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Gabby Douglas sits in the Olympic Media Lounge at Westfield Stratford City in London. During the Olympics, Douglas' Facebook fanbase grew by nearly 4,000 percent. Alex Grimm/Getty Images for adidas hide caption

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Sir Chris Hoy of Great Britain cries as he celebrates winning the men's keirin track cycling final. In shedding Olympic tears, Hoy was far from alone in Britain. Pascal Le Segretain/Getty Images hide caption

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Fireworks explode at London's Olympic Stadium during the closing ceremony of the Summer Olympics. The gala has gotten good reviews — with the exception of those troubled by NBC's presentation. Thomas Coex/AFP/Getty Images hide caption

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