Dr. Timothy M. Persons is the Chief Scientist and Managing Director of the Science, Technology Assessment, and Analytics team of the United States Government Accountability Office (GAO - the oversight, insight, and foresight entity of the U.S. Congress). In addition to leading advanced data analytic activities at GAO, he also directs GAO’s science, technology, and engineering portfolio – including technology assessment, technical assistance, and engineering sciences groups as well as GAO’s Audit Innovation Lab. In these roles he leads a large and diverse interdisciplinary team which advises Congress and informs legislation on various topics such as artificial intelligence, advanced data analytics, sustainable chemistry, biosafety and biosecurity, 3D printing, nanomanufacturing, homeland security systems, and freshwater conservation technologies, among others. He also directed the production and release of GAO’s Best Practices Guides – Cost, Schedule, and Technology Readiness Assessment. Prior to joining GAO, Dr. Persons served as the Technical Director for the Intelligence Advanced Research Projects Activity (IARPA) as well as the technical lead for Quantum Information Sciences and Biometrics research groups for the Information Assurance Directorate at the National Security Agency.