The Administrator and Deputy Administrator of NASA are the highest-ranked officials of NASA, the space agency of the United States. The Administrator serves as the senior space science adviser to the President of the United States. According to NASA, the role of the Administrator is to "lead the NASA team and manage its resources to advance the Vision for Space Exploration." The Deputy Administrator of NASA "serves as the agency’s second in command and is responsible to the administrator for providing overall leadership, planning, and policy direction for the agency. He represents NASA to the Executive Office of the President, Congress, heads of federal and other appropriate government agencies, international organizations, and external organizations and communities. He also oversees the d