Matthew J. Friedman, MD, PhD, is Senior Advisor to the National Center for PTSD, where he served for 24 years as Executive Director; founder and Director of the National PTSD Brain Bank; and Professor and Vice Chair for Research in the Department of Psychiatry at the Geisel School of Medicine at Dartmouth. Dr. Friedman has worked as a clinician and researcher since the 1970s, and has approximately 350 publications, including 28 books. He is past president of the International Society for Traumatic Stress Studies and past chair of the American Psychiatric Association’s DSM-5 and DSM-IV-TR PTSD Work Groups. He has served on numerous national research, education, and policy committees and has received many honors for his leadership and contributions to the field. Paula P. Schnurr, PhD, is cofounder and Executive Director of the National Center for PTSD and Professor of Psychiatry at the Geisel School of Medicine at Dartmouth. Dr. Schnurr is editor of the Clinician’s Trauma Update-Online, former editor of the Journal of Traumatic Stress, past president of the International Society for Traumatic Stress Studies, and a Fellow of the American Psychological Association and the Association for Psychological Science. With over 250 publications, she has won a number of awards for her research and contributions to the field of traumatic stress studies. Her research focuses on the treatment of PTSD and the longitudinal study of the effects of traumatic exposure on physical and mental health. Terence M. Keane, PhD, is Director of the Behavioral Sciences Division of the National Center for PTSD, Associate Chief of Staff for Research at the VA Boston Healthcare System, and Professor of Psychiatry and Assistant Dean for Research at Boston University School of Medicine. Dr. Keane is past president of the Anxiety and Depression Association of America, the International Society for Traumatic Stress Studies (ISTSS), and the Division of Trauma Psychology (Division 56) of the American Psychological Association. Currently, he is president of the American Psychological Foundation. He is a recipient of the Lifetime Achievement Award from the ISTSS, two honorary doctorates, the John Blair Barnwell Award from the Department of Veterans Affairs, and many other awards recognizing his research and scientific contributions to the field.