Actually I'm no longer surprised the Chinese sub got so close.
Security is so lax in that carrier group they even let a godless communist like myself on board, with a camera.
They obviously haven't seen Dr Strangelove.
"I... I don't know exactly how to put this, sir, but are you aware of what a serious breach of security that would be? I mean, he'll see everything, he'll... he'll see the Big Board!"