United States celebrate gold medal at Rio Olympics

United States celebrate gold medal at Rio Olympics

Natasha Hastings, Phyllis Francis, Allyson Felix and Courtney Okolo of the United States hold up a Thank You Rio banner after winning the gold medal in the Women's 4 x 400 meter Relay at Olympic Stadium at the 2016 Rio Summer Olympics in Rio de Janeiro, Brazil, on August 20, 2016. Photo by Kevin Dietsch/UPI

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