Darian Townsend is an Olympic gold medalist, a world record holder, an NCAA champion and one of Swimming World’s 2014 Top 12 World Masters Swimmers of the Year. He’s represented South Africa internationally for years, but after becoming a U.S. citizen last summer, the 30-year old will now focus his attention on swimming fast for the United States. A natural leader, he already captained his first U.S. national team in January at Australia Swimming’s Super Series.