During a high-energy test, a facility-wide fire alarm is activated. The Test Conductor observes no immediate anomaly with the test article or control system. What is the Test Conductor's most critical and immediate responsibility?

1. Continue the test while monitoring for secondary indications of a problem.
2. Contact the facility manager to confirm if the alarm is real before taking action.
3. Immediately initiate the Emergency Shutdown Procedure, prioritizing personnel safety and evacuation.
4. Perform a normal, orderly shutdown to preserve test data before evacuating.