The United States Fish and Wildlife Service (USFWS or FWS) is an agency within the United States Department of the Interior dedicated to the management of fish, wildlife, and natural habitats. The mission of the agency is "working with others to conserve, protect, and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people." Among the responsibilities of the USFWS are enforcing federal wildlife laws; protecting endangered species; managing migratory birds; restoring nationally significant fisheries; conserving and restoring wildlife habitats, such as wetlands; helping foreign governments in international conservation efforts; and distributing money to fish and wildlife agencies of U.S. states through the Wildlife Sport Fish and Restoration Program. The vast majority of fish and wildlife habitats are on state or private land not controlled by the United States government. Therefore, the USFWS works closely with private groups such as Partners in Flight and the Sport Fishing and Boating Partnership Council to promote voluntary habitat conservation and restoration. The agency's directorship is currently led by Martha Williams. President Joe Biden appointed her to the position on March 8, 2022. She was previously the director of the Montana Department of Fish, Wildlife and Parks. The USFWS employs approximately 8,000 people and is organized into a central administrative office in Falls Church, Virginia, eight regional offices, and nearly 700 field offices distributed throughout the United States. Activities National Wildlife Refuge System The USFWS manages the National Wildlife Refuge System, which consists of 560 National Wildlife Refuges, encompassing a full range of habitat types, including wetlands, prairies, coastal and marine areas, and temperate, tundra, and boreal forests spread across all 50 U.S. states. It also manages thousands of small wetlands and other special management areas covering over . National Monuments The USFWS governs six National Monuments: The Hanford Reach National Monument in Washington state; The Papahānaumokuākea Marine National Monument, a huge maritime area in the Northwestern Hawaiian Islands, managed jointly with the National Oceanic and Atmospheric Administration (NOAA) and the State of Hawaii); The Aleutian Islands World War II National Monument in the Aleutian Islands in Alaska; The Pacific Remote Islands Marine National Monument, the largest marine protected area in the world, managed in consultation with NOAA; The Rose Atoll Marine National Monument in American Samoa, managed jointly with NOAA and the Government of American Samoa; and The Marianas Trench Marine National Monument, which includes undersea mud volcanoes,