"The way in which the J-20 was unveiled also reflects China’s use and control of information technology to support national interests. The test airfield is located in the city of Chengdu and is not secure, with many public viewing points. Photography is technically forbidden, but reports suggest that patrols have been permitting the use of cell phone cameras."

http://taosecurity.blogspot.com/2011/01/more-on-chinese-stea...