Why should occupancy be checked when updating a preincident plan?

• A. Occupancy may change over time
• B. Occupancy is constant
• C. Occupancy should be kept confidential
• D. Occupancy is irrelevant to planning

Answer: (A)

Occupancy is dynamic and directly shapes how a plan works in a real incident. When buildings change uses, tenants come and go, or configurations are altered, the number of people who could be inside, how they move, and where hazards concentrate all shift. That affects key planning elements: how many occupants you must account for in evacuation or sheltering, the capacity of exits and egress routes, the equipment and personnel you’ll need, and how you’ll coordinate with building management and responders. If you don’t verify the current occupancy, the plan may over- or under-commit resources, misjudge egress times, or fail to address the actual risks on site. Because occupancy can change over time, checking it ensures the plan stays accurate and actionable.