This video shows the Max Fire Box Phase II set up as a two-story burn. Fire is initially burning in the garage. The second-floor window is open, and the garage door is closed. As conditions develop, fast-traveling smoke with significant velocity pushes out of the second floor. That movement tells a story. This rep is all about size-up—reading the building, the openings, and the smoke before making decisions. By opening and closing different burn chambers, we intentionally create vent point ignit