Beijing Military Museum (18 images)

A Chinese woman poses for a photograph as she straddles the muzzle of an old Chinese tank on display at Beijing's National Military Museum of Revolution March 22, 2009. The head of the U.S. Pacific Command last week stated that China's "aggressive and troublesome" run-in with an unarmed American ship shows that Beijing is not yet ready to behave acceptably. (UPI Photo/Stephen Shaver)

A Chinese boy pretends to shoot down enemy planes on an old anti-aircraft gun on display at Beijing's National Military Museum of Revolution March 22, 2009. The head of the U.S. Pacific Command last week stated that China's "aggressive and troublesome" run-in with an unarmed American ship shows that Beijing is not yet ready to behave acceptably. (UPI Photo/Stephen Shaver)

A Chinese boy stands on an old anti-aircraft gun on display at Beijing's National Military Museum of Revolution March 22, 2009. The head of the U.S. Pacific Command last week stated that China's "aggressive and troublesome" run-in with an unarmed American ship shows that Beijing is not yet ready to behave acceptably. (UPI Photo/Stephen Shaver)

A Chinese woman inspects the interior of an old Chinese tank on display at Beijing's National Military Museum of Revolution March 22, 2009. The head of the U.S. Pacific Command last week stated that China's "aggressive and troublesome" run-in with an unarmed American ship shows that Beijing is not yet ready to behave acceptably. (UPI Photo/Stephen Shaver)