Immediately after activating the master Emergency Stop button in the control room, which of the following is the Test Conductor's MOST critical communication task?

1. Announcing clearly over all communication channels, "Emergency Shutdown initiated, safe the system, evacuate the area."
2. Calling the Test Director on a private line to explain the reason for the shutdown.
3. Starting a log entry to document the time and cause of the event.
4. Asking the data systems operator to confirm that all data recording has ceased.