Suicide-related thoughts and behaviors (SRTBs) have become identified as common antecedent experiences of mass shooters prior to and during their shootings. To better support and inform efforts of such upstream prevention and intervention efforts of mass violence, this study aimed to provide an exploratory descriptive perspective of the interpersonal experiences of mass shooters who survived and those who died on the scene (i.e., died by self-inflicted suicide, or died by police intervention)...