Studies suggest that individuals experience a broad range of traumatic events throughout their lives and that the frequency of these events may vary by the group studied, for example, civilian versus noncivilian samples. The fourth edition of the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) defines a traumatic event as an event experienced, witnessed, or confronted by a person that involves (a) actual or threatened death, (b) serious injury, or (c) a threat to the physical integrity of self or others.1 The DSM-IV-TR diagnosis of PTSD also requires that the person’s response to the event involve intense fear, helplessness, or horror. Traumatic events may include military combat, violent personal assault, being taken hostage, a terrorist attack, torture, natural or manmade disasters, and being diagnosed with a life-threatening illness.