American spy plane confronted by china. Our reporter was on board. This was a classified american surveillance flight. The First American surveillance flight through some of the worlds most dangerous air space. And this is americas most advanced spy plane. Its a its a payaa poseidon. Well take you inside this topsecret spy plane exclusively. Foreign military aircraft. This is chinese navy. You are approaching our military alert zone. Leave immediately. Heres where the plane was. A dozen American Naval officers flying over these disputed islands claimed by china. Jim sciutto just got back from that flight and jim, you were on a classified mission, the only reporter. You heard the chinese telling the americans to go away again and again, the language getting more and more elevated. How tense was it on board that plane . Extremely tense. Basically you have an Irresistible Force meeting an immovable object. The u. S. Insisting this is International Air space its going to fly through, sail