As the central office for NIH, OD establishes NIH policy and broad themes for the agency to pursue, such as ensuring a sustainable scientific workforce, based on national needs and scientific opportunities. In addition, the OD is responsible for coordinating the programs and activities that span NIH components, particularly research initiatives and issues involving more than 1 of the 27 ICs. OD is also responsible for ensuring that scientifically-based strategic planning is implemented in support of research priorities, and that NIH's resources are sufficiently allocated for research projects identified in strategic plans. NIH conducts and sponsors biomedical research through its ICs, each of which is charged with a specific mission.