Final answer:
A building security officer should know the public address system and exit announcement script location as part of pre-emergency preparedness to ensure effective communication during an evacuation.
Step-by-step explanation:
Indeed, it is a pre-emergency duty for a building security officer to be well-acquainted with the public address system and to know the location of the exit announcement script. In the event of an emergency, swift and clear communication is crucial for the safe evacuation of the building's occupants. Knowledge of the public address system allows the security officer to inform and direct individuals effectively, while the exit announcement script provides a standardized communication that can be used to calmly guide individuals towards safety. Familiarity with these tools before an emergency ensures that, if an incident occurs, the security team can act promptly, reducing chaos and preventing further hazards.