Fireground Operations
Strategy, tactics, and company skills
At Firefighter II you are expected to complete size-up, operate attack lines, support water supply, and preserve evidence for cause determination. Every decision flows from the tactical priorities: life safety, incident stabilization, property conservation. Strategy is offensive, defensive, or transitional; tactics are the tasks, often organized as RECEO-VS (rescue, exposures, confinement, extinguishment, overhaul, ventilation, salvage).
Size-up weighs building construction, occupancy, fire location and extent, water supply, and available resources. Know the difference between a handleline (1 3/4-inch) and a master stream. A 15/16-inch smooth-bore tip on a 1 3/4-inch line flows roughly 185 gpm; a 2 1/2-inch line reaches roughly 250-300 gpm. Supply options are hydrants, tankers in a water shuttle, relay pumping, and drafting from static sources.
Traps to expect: opening a ceiling without a charged backup line; operating above a fire without a protected stairway; calling a building defensive while a crew is still inside; and overhauling through the area of origin before the investigator sees it.
Worked example: heavy fire through the roof of a single-story commercial occupancy with no savable contents. Fire has compromised the roof structure, so no interior attack is tenable. The strategy becomes defensive: a collapse zone of 1.5 times the wall height is established, and master streams are positioned outside that zone.
Rule of thumb: once fire controls the structure, the structure is lost, so position for exposure protection and firefighter safety rather than entry.