U.S. Olympian Katie Ledecky is the world record holder in the 400-, 800- and 1500-meter freestyles, and the American record holder in the 500-, 1000- and 1650-yard freestyles.In the Olympics in Rio de Janeiro, she will compete in the 200-, 400-, and 800-meter freestyle. She has won Gold medals in the 2012 London Olympics and again in the 2016 Rio Olympics.But before every race Ledecky, a faithful Catholic, offers a Hail Mary. “I do say a prayer – or two – before any race. The Hail Mary is a beautiful prayer and I find that it calms me.” she said.In an interview with...