SAN FRANCISCO (AP) — A federal appeals court Monday revived a lawsuit that seeks to block construction of a U.S. military base in Okinawa, Japan over concerns about its impact on the Okinawa dugong, an endangered marine mammal that resembles a manatee. The Center for Biological Diversity has authority to challenge the adequacy of the government's evaluation of the effect on the Okinawa dugong, the 9th U.S.