Twenty-one female psychiatric outpatients with chronic posttraumatic stress disorder (PTSD) are randomly assigned to prolonged exposure (PE; n = 9) for PTSD or treatment as usual (TAU; n = 12). Participants are predominately low income and African-American with complex trauma and psychiatric histories. Treatment is delivered by community therapists with no prior training in behavior therapy for anxiety disorders. Clients who completed PE show a greater improvement in PTSD symptoms, general anxiety, and depression than clients who completed TAU. These findings provide preliminary evidence suggesting that PE is an effective treatment for core PTSD symptoms, even when delivered by community therapists in a front-line services clinic. (Published Abstract)