An action used to secure inactive section of line.

An action used to secure inactive section of line.

• A. Anchor and Flank
• B. Pincer
• C. Envelopment
• D. Cold trailing

Answer: (D)

Cold trailing is the process of walking along a constructed fire line after the fire front has passed to verify there are no heat pockets and to mop up any remaining hotspots. The goal is to ensure the line is truly cool and secure, so rekindling along that section is prevented. This approach is used specifically for inactive segments of the line because it focuses on confirming stability and eliminating residual heat rather than actively fighting flames on the edge. Other tactics like anchor and flank, pincer, or envelopment describe active maneuvers to contain or surround the fire while it’s still burning, whereas cold trailing targets verification and securing already-built line.

Cold trailing is the process of walking along a constructed fire line after the fire front has passed to verify there are no heat pockets and to mop up any remaining hotspots. The goal is to ensure the line is truly cool and secure, so rekindling along that section is prevented. This approach is used specifically for inactive segments of the line because it focuses on confirming stability and eliminating residual heat rather than actively fighting flames on the edge. Other tactics like anchor and flank, pincer, or envelopment describe active maneuvers to contain or surround the fire while it’s still burning, whereas cold trailing targets verification and securing already-built line.