Remote Kozu Island, which is administered by Tokyo, held its first comprehensive disaster drills since March 2011 on Thursday, in preparation for a major earthquake.
For the first time the U.S. Navy in Japan joined a remote-island disaster exercise regularly conducted by the Tokyo Metropolitan Government, the Japan Coast Guard and the Self-Defense Forces.
The scenario for the drills assumed the island, roughly 180 km south of central Tokyo, would be hit by 25-meter tsunami following a magnitude 9.1 quake in the Nankai Trough off central and western Japan, with the first, 1-meter wave arriving in 11 minutes.