What is the general sequence for actions on a working structure fire?

• A. Size-up, establish ICS, safety, water supply, interior or defensive, ventilation, salvage/overhaul.
• B. Ventilation first, then attack.
• C. Attack first with no coordination.
• D. Salvage only.

Answer: (A)

The sequence for actions on a working structure fire centers on establishing control and safety before beginning suppression. Start with a thorough size-up to understand fire behavior, occupancy, and hazards, then establish the Incident Command System to coordinate resources and maintain accountability. Safety must be reviewed and enforced to protect everyone on scene. Securing a reliable water supply is essential to support an effective attack. Next, decide whether to go interior for an offensive attack or maintain defensive measures based on conditions, life safety, and risk. Ventilation is coordinated after a plan for attack or defense is in place, to improve visibility and reduce heat without worsening fire conditions. Finally, salvage and overhaul address remaining hot spots and protect property once the main fire is under control.

Ventilating first without a plan and water supply coordination can worsen conditions or spread the fire. Attacking without coordination ignores command, safety, and overall strategy. Salvage-only approaches neglect the critical suppression and life-safety work that must come first.