Ohio First Responders Stress and Health StudyThis study will look at stress, trauma, coping, and mental health among first responders during the COVID-19 pandemic. A secondary purpose of this study is to see how health is reflected in biological markers in the blood among a subset of participants. The research team is most interested in proinflammatory cytokines. These are immune markers found in the blood that increase in response to stress and are linked to risk for cardiovascular disease and other chronic illnesses.