On September 25, 2003, in San Francisco, a coalition of U.S. and international conservation groups filed a lawsuit (Okinawa Dugong v. Rumsfeld C-03-4350) in U.S. District Court against the U.S. Department of Defense plans to construct a new air base on reclaimed land over a coral reef that would destroy the remaining habitat of the endangered Okinawa dugong, a marine mammal of cultural and historical significance to the Okinawa people. This new air base, known as “Futenma Replacement Facility” (FRF), is an initiative of central importance proposed in “United States-Japan Roadmap for Realignment Implementation” (“2006 Roadmap”).