Part 5/7:
Federal authorities and military defense begin to coordinate a response as American 11 continues its unexpected path. Controllers at Boston communicate with various centers to alert them about the hijack situation, seeking to scramble fighter jets for interception. The urgency escalates as well-coordinated efforts are made to track the flight, despite the loss of communication.
Concerns mount as American 11 heads towards urban areas, leading to frantic discussions about the trajectory and intentions of the flight. Controllers relay the flight's final known heading and altitude as they seek any information regarding its status.