Katie Ledecky dominates the 1500 again, her 12th Olympic medal, tied for the most ever by a female swimmer.

Katie Ledecky dominates the 1500 again, her 12th Olympic medal, tied for the most ever by a female swimmer.

​Katie Ledecky dominates the 1500 again, her 12th Olympic medal, tied for the most ever by a female swimmer. Katie Ledecky dominates the 1500 again, her 12th Olympic medal, tied for the most ever by a female swimmer. US