Marietta, Robert: - Robert Marietta has spent his career serving as a psychiatrist in the military and Veterans Affairs. He earned a commission through the Navy and his MD from Saint Louis University School of Medicine. He completed a Navy psychiatry residency at Naval Medical Center Portsmouth and then served with the 3d Marine Division in Okinawa, Japan. After leaving the Navy, Dr. Marietta joined the Public Health Service and has served on active duty since. He has provided care for tens of thousands of service members, their families, and veterans. He is passionate about the military and mental health.