STEPHEN M. COHN, MD, is a former surgeon in the U.S. Army Medical Corp in Desert Storm, past Division Chief of Trauma and Surgical Critical Care at Yale University School of Medicine, past Medical Director of the Ryder Trauma Center in Miami, past Chairman of the Department of Surgery at the University of Texas Health Science Center, and current practitioner in New York City. He is the author of All Bleeding Stops: Life and Death in the Trauma Unit (Mayo Clinic Press).