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David Muir speaks with marathon swimmer about her mission to protect lakes and oceans
At Skaneateles Lake in New York, Rachael DeWitt made her lifelong dream a reality after finishing a nine hour marathon swim ...
Marathon swimmer speaks with David Muir about mission to protect lakes and oceans
DeWitt currently lives in Washington, D.C., but she grew up on Skaneateles Lake -- just a 30-minute drive "World News Tonight ...