 The goal of this study is to learn more about how Inner Resources for Veterans IRV meditation therapy helps Veterans with Post Traumatic Stress Disorder PTSD and mild traumatic brain injury mTBI. PTSD is a disorder that occurs after exposure to one or more traumatic experiences. People with PTSD may experience anxiety, pay extra attention to their surroundings, involuntarily remember their traumatic experiences, andor want to avoid situations where these symptoms are increased. MTBI may result from being in a blast explosion, with pressure from the blast potentially disrupting the brains structure and function. At this time, it is not well known how PTSD and mTBI may affect each other. 