University of Minnesota professor Tanisha Fazal discusses her new book, "Military Medicine and the Hidden Costs of War." In the book, she highlights how modern advancements in military medicine reduce American fatalities but lead to underestimations of war costs, which have long-lasting impacts on veterans, their families, and the U.S. Treasury. Dr. Fazal joins Good Authority to discuss the shifting ratio of wounded to killed, unforeseen expenses such as Civil War pensions, and how the U.S. can more effectively estimate the financial costs of wars.