When constructing a downhill fireline, you should backfire the unburnt fuel between you and the fire as you go.

When constructing a downhill fireline, you should backfire the unburnt fuel between you and the fire as you go.

• A. True
• B. False, backfire after connecting to anchor point
• C. True, but only on slopes under 10 degrees
• D. False, never backfire

Answer: (B)

The idea tested is that safety and control come from establishing a secure anchor before using backfire on a downhill fireline. Backfiring the unburned fuel between you and the main fire as you move creates a high risk of trapping you if the wind shifts or the fire behavior changes—there’s no guaranteed retreat path or protected area. By first connecting to an anchor point, you lock in a safe retreat route and lay down a solid black area. Then, you backfire to consume fuels toward the fire from that anchored position, extending a protective burned strip and giving you a stable barrier between the fire and unburned fuels as you continue. The approach described minimizes risk and keeps you in a controlled, safer sequence.

The idea tested is that safety and control come from establishing a secure anchor before using backfire on a downhill fireline. Backfiring the unburned fuel between you and the main fire as you move creates a high risk of trapping you if the wind shifts or the fire behavior changes—there’s no guaranteed retreat path or protected area. By first connecting to an anchor point, you lock in a safe retreat route and lay down a solid black area. Then, you backfire to consume fuels toward the fire from that anchored position, extending a protective burned strip and giving you a stable barrier between the fire and unburned fuels as you continue. The approach described minimizes risk and keeps you in a controlled, safer sequence.