A new Institute of Medicine (IOM) report describes efforts by the U.S. Department of Defense (DoD) and the Department of Veterans Affairs (VA) to combat posttraumatic stress disorder (PTSD). The report commends both departments for offering an array of prevention, screening, diagnosis, treatment, and rehabilitation options and for investing in research, programs, and services, including joint development of a clinical practice guideline for PTSD. However, improvements are needed in several areas, according to the report.