The Department of the Interior protects and manages the Nation's natural resources and cultural heritage; provides scientific and other information about those resources; and honors its trust responsibilities or special commitments to American Indians, Alaska Natives, and affiliated island communities. The U.S. Department of the Interior is a Cabinet-level agency that manages America's vast natural and cultural resources. The Secretary of the Interior heads our department, which employs 70,000 people, including expert scientists and resource-management professionals, in nine technical bureaus and various offices. The U.S. Department of the Interior protects America's natural resources and heritage, honors our cultures and tribal communities, and supplies the energy to power our future. Our employees, along with more than 280,000 volunteers, carry out Interior's mission from more than 2,400 operating locations. Serving communities large and small, they deliver our department's land- and community-based programs in ways that engage the participation of citizens, groups and businesses. We at Interior fulfill our commitment to the American people under a $12 billion total annual budget and through the dedication of our employees and other partners. We also raise billions in revenue annually from energy, mineral, grazing, and timber leases, as well as recreational permits and land sales.