TO ACCOMPANY FEATURE JAPAN-USA-OKINAWA, 2003-06-20 (photo)

U.S. Marines storm a house upon setting off explosives in an exercise in urban battle tactics at Camp Hansen on Japan's southern island of Okinawa, home to over half the U.S. military bases in Japan June 20, 2003. A century and a half after Commodore Matthew Perry arrived in the port of Naha with his "Black Ships" and was escorted by U.S. Marines, the top U.S. Marine in Okinawa says the island is still key to America's ability to respond to regional threats, including communist North Korea. Picture taken June 20, 2003. REUTERS/Eriko Sugita TO ACCOMPANY FEATURE JAPAN-USA-OKINAWA ES/CP