“…America is growing older (Ortman, Velkoff, & Hogan, 2014) and by the year 2030 it is estimated that there will be 72.1 million older adults, as defined as approximately age 65 and older (e.g., Areán, 2015), with anticipated increases in substance use (Duncan, Nicholson, White, Bradley, & Bonaguro, 2010). Considering the well-established relationship between substance use disorder (SUD) and posttraumatic stress disorder (PTSD; Berenz & Coffey, 2012; Riggs & Foa, 2008; Saxon & Simpson, 2015) and the still developing knowledge of later-life PTSD (Cook & Dinnen, 2015), there is a strong likelihood that many of these older adult SUD cases will also struggle with trauma. Consequently, there is a need for the health care system (including mental health and addiction services) to become better prepared to work with this population.…”