The PREVENT Resilience Study

Inclusion Criteria: * Men and women 18-65 years of age. (Assessed via self-reported and medical record-based Date of Birth) * Trauma exposed within the last 2 weeks (Endorsement of having experienced an event that could have caused death, serious injury, or sexual violence) * High initial symptoms of PTSD related to the index trauma - PTSD Checklist for Diagnostic and Statistical Manual( DSM)-5 (PCL-5) \>30 with 2+ hyperarousal symptoms * Low symptoms of PTSD related to a previous lifetime trauma - PCL-5\<31 * Participants may be on psychotropic medication, including antidepressants, antipsychotics, benzodiazepines and anticonvulsants, but the dosage of the medication must be stable for at least 6 weeks and not change during the course of the study (Assessed via self-report during the screening phone call). * Capable and willing to provide informed consent. Exclusion Criteria: * Having active suicidal intent or plan, or in the clinician's opinion, is likely to attempt suicide within the next six months. (Assessed via the Patient Health Questionnaire-9 (PHQ-9) during the screening phone call) * Lifetime diagnosis of psychotic disorder or bipolar disorder per psychiatric screener. (Assessed via self-report during the screening phone call) * Diagnosed with the following conditions: a neurological disorder, including a history of seizures, cerebrovascular disease, primary or secondary tumors in the central nervous system (CNS), stroke, cerebral aneurysm or movement disorder or…