Co-occurring post-traumatic stress disorder (PTSD) and alcohol use disorder (AUD) disproportionately affects Veterans and has significant negative impacts on the safety, wellbeing, and quality of life of Veterans, their romantic partners, and their families. However, treatments that address co-occurring PTSD-AUD and restore Veterans' psychosocial functioning are lacking. The overall goal of this project is to improve treatment approaches aimed at reducing symptoms of co-occurring PTSD-AUD and improving functioning among Veterans and their partners. We plan to do this by learning from Veterans, family members, and treatment providers in order to inform an adaptation of a brief dyadic AUD intervention to be delivered alongside integrated PTSD-AUD treatment for Veteran couples and then conducting a pilot trial of an adapted Brief Family Involved Treatment (B-FIT) intervention with Veterans with PTSD-AUD and their romantic partners.