Professor of Strategic Communication in the Nicholson School of Communication at the University of Central Florida (USA). His research focuses on risk and crisis communication. He has conducted funded research for the Department of Homeland Security, the United States Department of Agriculture, the Centers for Disease Control and Prevention, the Environmental Protection Agency, the United States Geological Survey, and the World Health Organization. He has also served in an advisory role for the National Academy of Sciences, the Federal Emergency Management Agency, and the Food and Drug Administration.