The fire is venting on the second floor, the wind is shifting, the truck is 90 seconds out, and the radio is waiting for the initial report that frames everything that follows. Decisions made in those first 30 seconds — strategic mode, command declaration, line placement — determine whether the operation extinguishes the fire or chases it through the building. Fire Officer Tactics Guide builds the cognitive framework that company officers and initial incident commanders apply at structural fires, from the curb read through the post-incident review. Inside these pages: • Recognition-primed decision making — apply the pattern-matching framework that experienced commanders use when there is no time to analyze • Modern fire dynamics and flow path control — translate UL FSRI and NIST research into door control, ventilation timing, and transitional attack decisions • Size-up that holds up under stress — work the COAL WAS WEALTH model and the 360-degree walk-around into a transmittable initial radio report • Strategic mode discipline — apply the risk-benefit framework that distinguishes offensive operations from defensive operations and execute clean transitions between them • Lightweight construction collapse risk — read wooden I-joist and parallel-chord truss failure timelines from the curb before crews commit • Mayday and rapid intervention — declare Mayday at first recognition, transmit LUNAR under stress, and deploy the RIC with pre-loaded readiness • Occupancy-specific tactics — adapt the operational template to basement fires, wind-driven residential, taxpayer cocklofts, big-box retail, high-rise standpipes, and NFPA 1021 examination scenarios This book is written for company officers, acting lieutenants and captains, battalion-level officers, promotional candidates, and fire service instructors who teach the next generation of incident commanders.