‘Very dangerous': Pentagon says armed Chinese jet did ‘barrel roll' over US aircraft

``Kirby said the Chinese jet made several close passes by the Navy P-8 Poseidon plane, coming within 30 feet of it. He said the Chinese jet did a "barrel roll" maneuver over the top of the Poseidon and also passed across the nose of the Navy plane, exposing the belly of the fighter in a way apparently designed to show that it was armed.''