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 words with transit workers who asked him to put