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Elizabeth Pelton competes in preliminary heat 18 of the Women's 200 m Backstroke during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)

U.S. Olympic swim trials

Athletes compete for a place on the U.S. swimming team at the 2012 Olympic games in London.