In the days before her accident in the summer of 2014, Railey was headlong into her third Olympic campaign, going through the motions with her devoted coach, Mark Littlejohn. She was focused on the world championships. Then came pavement, the flash, the ambulance, the ER, the doctors, the pain, the lesions, the nausea, the darkness and the doubts. She was intent on sailing immediately, but her brain — and her doctors — wouldn’t allow it. They wrote her off for six months, minimum.