Mary Lou Retton, a former Olympic gymnast, is in intensive care after suffering a "scary setback" in her battle with a rare form of pneumonia. Her daughter Shayla Schrepfer shared the news on social media and noted that Retton had been making progress earlier in the week, but experienced a setback on Tuesday. Retton's family has asked for privacy and expressed their gratitude for the outpouring of love and support from fans and well-wishers.