This story originally aired on April 15, 2017. In the spring of 2014, Marilyn Roberts' son, Kevin, was 27 years old and struggling with bipolar disorder. One day, he called his mom to tell her that he was taking a bus to go to downtown Olympia, Wash., not too far from where he lived. "He was to a point where wasn't cognizant of what was going on, on a day to day basis," Roberts remembers. Kevin smokes cigarettes. At a bus stop in Olympia, he lit up in a non-smoking area. Kevin exchanged a few