Doering was last seen in Gresham, Oregon, during the summer of 2017. He last spoke with his mother at her home in July and was arrested on July 17 for trespassing and violating a restraining order. In August, he was seen leaving the Coda Gresham Recovery Center. He has not been heard from since. Doering had faced challenges with substance use and had been experiencing homelessness for approximately two years at the time of his disappearance. These struggles led to difficulties within his family, and both of his parents had previously obtained restraining orders against him. However, he remained in contact with his loved ones, and his mother later chose to have her restraining order lifted.