After initial size-up, the incident commander should:

• A. Pass command to the company officer
• B. Follow the plan precisely once it has been established
• C. Continue size-up and revise plans as conditions change
• D. Have a charged line ready for use at the point of entry

Answer: (C)

Incidents are dynamic, so size-up doesn’t stop after the first assessment. The incident commander should keep building the picture of what’s happening on scene and continuously revise the plan as conditions change. Fire behavior, occupancy risk, structural integrity, weather, and the actions of crews all evolve, and tactics, resources, and safety measures must adapt accordingly. This ongoing reassessment helps ensure effective operations and keeps everyone safer.

Transferring command right after initial size-up isn’t the default move, since leadership is needed to steer the evolving response. Following a plan precisely without updating it ignores new information. Having a charged line is important, but it doesn’t address the need to adapt the overall strategy as the situation shifts.