Tanner Denton was on vacation with his family in Hawaii in 2016 when he went on an organ donation kick. There was not much of a sequitur to the conversation, according mother Allison McKissen. Her son — a 23-year-old Colorado Mesa University student and avid baseball fan — started asking all his relatives whether they were organ donors, asking even to see their driver’s licenses. “He was talking to everyone about it,” McKissen said. A few weeks later, when Tanner was fatally injured in a wreck on Redlands Parkway, his mother remembered his words.