Background Choice News Today

Aviation correspondent, i should say, richard quest. are you happy now that i said 777? >> very happy. >> earlier he said, stop saying 777, say triple 7. first question from mark. is it possible what the chinese heard could be a submarine? michael, go. >> i dont think it could be a submarine. i think theres lots of background choice. i think it could be something natural. it doesnt have a hitter. the hydroplane doesnt have a filter on it. its incredibly difficult to know what it is. submarine, p...