Katie Ledecky, Team USA win silver in 4 x 200m freestyle

Read MoreSwim legend Katie Ledecky earned her 13th Olympic medal in the women’s 4 x 200m freestyle relay on Thursday, making her the most decorated female U.S. Olympian of all time.Swim legend Katie Ledecky earned her 13th Olympic medal in the women’s 4 x 200m freestyle relay on Thursday, making her the most decorated female U.S. Olympian of all time.