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Countdown to Rio: Athletes arrive amid last-minute preparations

 

Last-minute preparations are underway in Rio de Janeiro for what will be the first Olympic games ever held in South America. But with a doping scandal, a political crisis, polluted waters, unfinished venues and security challenges, will the city be ready in time? NBC’s Keir Simmons reports for TODAY from Copacabana Beach. (Run time: 3:16)

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