A former US Air Force pilot is accused of training China's military, violating US arms-control laws, and faces at least six to eight years in prison if convicted.
Gerald Eddie Brown, 63, was arrested in February after returning to the US from China, where he had lived for over two years.
Prosecutors allege that Brown provided unauthorized training to Chinese military pilots, including speaking at a Beijing military conference and meeting with Chinese military intelligence officials.
Brown's lawyers deny the allegations, calling them 'overwrought and salacious,' and say he is innocent.
The case reveals new details about how China is recruiting foreigners to advance its military ambitions and how the US is responding to these efforts.