After completing the exterior portion of the pre-incident survey, where should the company officer begin?

Starting the interior survey from top to bottom or bottom to top is the most effective approach because it allows the company officer to gain a comprehensive understanding of the building's layout and systems. By systematically assessing from one level to another, it ensures that the officer can observe and document critical features such as stairs, hallways, exits, and potential hazards in an organized way.

This methodical approach helps in establishing a clear mental map of the premises, which can be crucial during an emergency response. Furthermore, it allows the officer to evaluate ventilation points, fire protection systems, and any changes in the structure that may affect fire behavior or rescue operations.

This strategy also reinforces the importance of assessing all areas within the building comprehensively, rather than only focusing on specific parts or entry points. Assessing from both directions (top to bottom or bottom to top) also minimizes the risk of oversight, ensuring that all areas receive appropriate attention.