Chinese frigate Yantai is seen here in Qingdao, China, on Sept. 20, 2012. U.S. Defense Secretary Leon Panetta got a rare glimpse Thursday inside a Chinese naval base and toured two of its ships. Panetta checked out the frigate Yantai, which recently returned from a counter-piracy deployment in the Gulf of Aden, and the Great Wall 197, a conventionally powered submarine. (Associated Press)

Photo by: Larry Downing

Chinese frigate Yantai is seen here in Qingdao, China, on Sept. 20, 2012. U.S. Defense Secretary Leon Panetta got a rare glimpse Thursday inside a Chinese naval base and toured two of its ships. Panetta checked out the frigate Yantai, which recently returned from a counter-piracy deployment in the Gulf of Aden, and the Great Wall 197, a conventionally powered submarine. (Associated Press)