Final answer:
Upon activation of a fire alarm, the FLS Director must head to the emergency assembly area or command center immediately, as per the emergency response plan.
Step-by-step explanation:
When the fire alarm is activated, the FLS Director must immediately report to the designated emergency assembly area or command center. This is typically a pre-determined location that has been identified in the company's or the building's emergency response plan. The prompt action of the FLS Director is crucial to ensure that proper evacuation procedures are followed and to account for all individuals within the building. This person is also responsible for liaising with emergency services, such as the fire department, to support an effective response to the incident.