With IAD chief of air operations, Trudeau, Barnes agrees to slow up air traffic due to the storm front coming in and work on the runways to keep them from icing up. When Washington National Airport shut down due to icy conditions, Dulles controller was forced to divert the planes to their airport. When John McClane comes in and shows them the identity of the man he killed in the luggage area was a mercenary name Oswald Cochrane and that someone will more likely takeover the airport, Barnes and the others witnessed runway lights have been shut down. The traffic controllers find that their systems are down and inoperable, realizing that all of their systems have been hacked. After the leader of the terrorists, Colonel Stuart calls in and tells Dulles that he wants the plane carrying General