An aerial view of Dunbarton Bridge, the San Francisco Bay wetlands, and salt ponds. An aerial view of Dunbarton Bridge, the San Francisco Bay wetlands, and salt ponds. An aerial view of Dunbarton Bridge, the San Francisco Bay wetlands, and salt ponds. An aerial view of the San Francisco Bay wetlands and salt ponds, as well as Moffett Field. An aerial view of the San Francisco Bay wetlands and salt ponds, as well as Moffett Field. An aerial view of the San Francisco Bay wetlands and salt ponds.