U.S. Public Health Service Capt. Joseph (Sean) Cavanaugh M.D., is a public health physician and the Chief of the International HIV Prevention and Treatment (IHPT) for the U.S. Military HIV Research Program at the Walter Reed Army Institute of Research (WRAIR). He currently supervises the development and refinement of WRAIR’s President’s Emergency Plan for Acquired Immunodeficiency Syndrome (AIDS) Relief program in Tanzania, Uganda, Nigeria, and Kenya and contributes to relevant programmatic research in these countries. He also serves as the Deputy Principal to the Office of Global AIDS Coordinator, supervises the Associate Directors for IHPT, and coordinates with WRAIR’s primary implementing partner, the Henry Jackson Foundation.