RecruitingDevice studyEEG-based Personalized Transcranial Magnetic Stimulation (eTMS) to Treat Post-Traumatic Stress DisorderThis is a randomized, sham controlled study of the Electroencephalogram (EEG) based Transcranial Magnetic Stimulation (eTMS) treatment for Post-Traumatic Stress Disorder (PTSD). The recruitment goal is 110 participants who are United States Military veterans or first responders (e.g., firefighters, police, paramedics, etc.). The Study includes an EEG recording in order to determine the optimal treatment parameters for the eTMS system, followed by 15 in-office visits that take place over 21-28 total days. Two eTMS treatment sessions are administered during each office visit.