Specific Aim #3: To examine the efficacy of MYT + TAU in reducing frequency and/or intensity of PTSD symptoms. Hypothesis #3. While both groups are expected to show reductions in symptoms, compared to participants in the Delayed MYT + TAU group, Veterans in the Immediate MYT + TAU group will exhibit significantly greater reductions in the frequency and/or intensity of PTSD symptoms as assessed by the Clinician Administered PTSD Scale (CAPS) (baseline to 12-week change). We predict that Immediate MYT+TAU will have a differential impact on the three PTSD symptom clusters, with the greatest effect on the hyperarousal symptoms.