A Chinese People's Liberation Army Airforce's "Bayi Aerobatic Unit" J-10 fighter jet lowers its landing gears during an aerial demonstration at a base of the PLA Airforce's 24th Division in Yangcun, Tianjin, China, Tuesday, April 13, 2010. The media, along with about 51 military attaches from embassies in Beijing, including the United States, Britain and Israel, witnessed a 15-minute demonstration by four pilots from the 24th Air Division in China's domestically developed J-10 fighters. (AP Photo/Alexander F. Yuan)

Photo by: Alexander F. Yuan

A Chinese People's Liberation Army Airforce's "Bayi Aerobatic Unit" J-10 fighter jet lowers its landing gears during an aerial demonstration at a base of the PLA Airforce's 24th Division in Yangcun, Tianjin, China, Tuesday, April 13, 2010. The media, along with about 51 military attaches from embassies in Beijing, including the United States, Britain and Israel, witnessed a 15-minute demonstration by four pilots from the 24th Air Division in China's domestically developed J-10 fighters. (AP Photo/Alexander F. Yuan)