The stated mission of the commissioned corps of the U.S. Public Health Service is "Protecting, promoting, and advancing the health and safety of the Nation" in accordance with the commissioned corps's four core values: leadership, excellence, integrity, and service. Officers execute the mission of the commissioned corps in the following ways: • Help provide healthcare and related services to medically underserved populations: to Native Americans,
Alaska Natives, and to other population groups with special needs; • Prevent and control disease, identify health hazards in the environment and help correct them, and promote healthy lifestyles for the nation's citizens; • Improve the nation's mental health; • Ensure that drugs and medical devices are safe and effective, food is safe and wholesome, cosmetics are harmless, and that electronic products do not expose users to dangerous amounts of radiation; • Conduct and support biomedical, behavioral, and health services research, and communicate research results to health professionals and the public; and • Work with other nations and international agencies on global health problems and their solutions. As of 2019, the most common agency for commissioned corps officers was the
Indian Health Service, followed by the
Food and Drug Administration, and then the
Centers for Disease Control and Prevention. The increased benefits and pay of commissioned corps officers is considered especially beneficial for the Indian Health Service, where recruitment is difficult due to the remote locations of many of its jobs. In addition, the commissioned corps provides officers (medical officers, dental officers, therapists,
environmental health officers, etc.) to other uniformed services, primarily the
United States Coast Guard and the
National Oceanic and Atmospheric Administration Commissioned Officer Corps (NOAA Corps), which do not commission their own medical or dental officers. The Commissioned Corps provides a number of officers to support the Coast Guard throughout the country, including within the Coast Guard's senior leadership: The Coast Guard's chief medical officer is a
rear admiral in the Public Health Service Commissioned Corps. Commissioned corps officers also may be detailed to other U.S. Government agencies, including the
Department of Defense,
TRICARE, the
Department of Justice (
Federal Bureau of Prisons), the
State Department, the
Department of Homeland Security, and the
Department of the Interior (
National Park Service). Commissioned Corps officers may develop individual memoranda of understanding (MOUs) with other organizations, including state and local health agencies and non-governmental organizations (NGOs). The commissioned corps is often called upon by other federal, state, and local agencies to aid and augment in times when those agencies' resources are overwhelmed. These responses are designated as deployments by the Commissioned Corps, if the deployment is outside of the officer's normal duties, and coordinated through the Commissioned Corps's Readiness and Deployment Branch (RDB) in Commissioned Corps Headquarters (CCHQ). Deployments may be for technical needs in standard settings, or in the event of disasters, in austere environments. The commissioned corps may be militarized by an
act of Congress or by
executive order by the president of the United States, not only in time of war, but also in "an emergency involving the national defense proclaimed by the President." . states:In time of war, or of emergency involving the national defense proclaimed by the President, he may by Executive order declare the commissioned corps of the Service to be a military service. Upon such declaration, and during the period of such war or such emergency or such part thereof as the President shall prescribe, the commissioned corps (a) shall constitute a branch of the land and naval forces of the United States, (b) shall, to the extent prescribed by regulations of the President, be subject to the
Uniform Code of Military Justice, et seq., and (c) shall continue to operate as part of the Service except to the extent that the President may direct as Commander in Chief. Major militarization of the Commissioned Corps occurred during
World War II (1941–1945) and the
Korean War (1950–1953). Should it be called into active duty again, it would constitute a seventh branch of the
United States Armed Forces. ==Deployments==