Definition & Operational Usage of Transitional Attack
What Is Transitional Attack?
A transitional attack is an offensive fire suppression tactic where a firefighter applies a brief, high-volume exterior water stream (straight or solid stream) directly into a fire compartment window or door from the exterior before advancing interior for final suppression and search.
Why Transitional Attack Matters on the Fireground
Transitional attack rapidly cools superheated fire gases in seconds, dropping room temperatures by hundreds of degrees and reducing flashover potential before interior entry, improving survivability for trapped occupants and advancing crews.
Relevant NFPA Standards
- NFPA 1010: Standard on Professional Qualifications for Firefighters
- NFPA 1550: Standard for Emergency Responder Health and Safety
Field Procedures & Tactical Steps
- Identify heavy fire showing from an accessible exterior window or door.
- Set smooth-bore or fog nozzle to a solid or straight stream pattern.
- Direct stream upward into the window ceiling for 10 to 20 seconds without moving nozzle excessively.
- Shut off exterior stream as soon as main knockdown and flame darkening are observed.
- Transition immediately interior with a charged hose line to complete suppression and search.
Common Context & Application
Executed by first-arriving engine companies when fire is showing from exterior openings prior to interior entry.
Frequently Asked Questions about Transitional Attack
Does a transitional attack push fire into other rooms?
How long should exterior water be applied during a transitional attack?
Other Names for Transitional Attack
Transitional Attack may also appear in training materials, NFPA standards, or department SOPs as: Exterior Attack, Pre-attack, Cooling Attack.
Relevant Tools
Operational calculators related to Transitional Attack: