Training developed for New York City social workers in the evolving aftermath of September 11, 2001 is introduced, offering a conceptual framework for clinical practice in the midst of unfolding trauma and traumatic loss. A focus is placed on the shared, collective process of learning and discussion among colleagues, as an effort parallel to work with clients, progressing together to establish meaning and hope through relationships. Professional training framing this catastrophe within trauma and traumatic loss perspectives, and addressing its impact on clinician, client, work, and treatment relationship, is needed. Also providing on-going support, a process of continuity, and a context of community, this training becomes a collective response to the profound impact and complex, evolving needs of this time.