Which direct attack action is typically used to attack the fire perimeter from multiple anchor points?

Which direct attack action is typically used to attack the fire perimeter from multiple anchor points?

• A. Parallel
• B. Pincer
• C. Envelopment
• D. Cold trailing

Answer: (C)

Envelopment is used when crews establish several anchor points around the fire’s edge and drive lines toward the center, effectively surrounding the fire from multiple directions. This direct attack leverages multiple fronts to form a containment ring, making it harder for the fire to breach any single line and allowing crews to close in from several sides where access and safety permit. It’s especially useful when you can access the perimeter all around the fire and want to trap it rather than push it in one direction. In contrast, a parallel attack builds a single line parallel to the edge on the unburned side, which doesn’t encircle the fire from multiple anchors. A pincer attack concentrates from two ends toward the middle, but it uses fewer anchor points and is best when two solid approaches exist. Cold trailing is a mop-up/backfire technique, not a direct attack on the current perimeter.

Envelopment is used when crews establish several anchor points around the fire’s edge and drive lines toward the center, effectively surrounding the fire from multiple directions. This direct attack leverages multiple fronts to form a containment ring, making it harder for the fire to breach any single line and allowing crews to close in from several sides where access and safety permit. It’s especially useful when you can access the perimeter all around the fire and want to trap it rather than push it in one direction. In contrast, a parallel attack builds a single line parallel to the edge on the unburned side, which doesn’t encircle the fire from multiple anchors. A pincer attack concentrates from two ends toward the middle, but it uses fewer anchor points and is best when two solid approaches exist. Cold trailing is a mop-up/backfire technique, not a direct attack on the current perimeter.