RecruitingDevice studyModulating Anxious CopingThis is a study to find out if a device that temporarily alters brain activity (repetitive transcranial magnetic stimulation, rTMS) might be used to change how people with anxiety or related concerns cope with feared or anxiety-producing situations. The study is recruiting people who recently started treatment for anxiety or a related concern. The study involves 3 visits to the Medical University of South Carolina. At the first visit, participants do interviews and surveys asking about anxiety and related concerns, and they also do tasks where they see and react to emotional pictures while their brain activation is measured. At the next two visits, participants receive rTMS, which works by rapidly turning a focused magnetic field on and off repeatedly over the head in a way that passes directly through the hair, scalp, and skull and onto the brain and can temporarily increase brain activity under the magnetic field. After rTMS, participants do two tasks where they see and react to emotional situations while wearing sensors on their hand, arms, face, and head. Each visit in this study is expected to last between 2 - 4 hours. This is not a treatment study, but the study is being conducted with the hope that it will help improve treatment in the future.