This chapter focuses on the importance of clinical supervisors having sufficient knowledge about trauma, stress, crisis, and disaster in order to supervise and mentor adequately. Supervisees are likely to bring complex cases into supervision, cases that involve multiple dimensions of crisis, stress, loss, grief, disaster, and trauma. For counselors serving traumatized clients, the potential for experiencing vicarious trauma increases. Supervisors need to possess the trauma-informed skills to offer relevant clinical supervision as well as to guide, mentor, and support supervisees on issues related to counselor self-care, in the face of dealing with stressful clinical scenarios.