What type of indirect attack on wildland fire involves a parallel approach?

The type of indirect attack on wildland fire that involves a parallel approach is accurately described as a parallel attack. This method entails establishing a control line alongside the fire perimeter, allowing firefighters to support and protect the area without directly engaging the flames head-on. By working parallel to the fire, crews can take advantage of the terrain and other natural features to conduct a safer and more effective attack.

In a parallel attack, firefighters can maintain a safe distance from the active fire front, reducing the risks associated with direct engagement with flames. This technique is particularly useful in managing larger or faster-moving fires where the direct approach may be too hazardous. By focusing on creating firebreaks or burnouts alongside the fire, resources can be used efficiently and strategically.

Understanding this method is crucial for effective wildland fire management, and it highlights the importance of strategic planning and positioning in firefighting efforts. The other options do not accurately describe the characteristics of the parallel approach, which specifically emphasizes the positioning alongside the fire rather than other forms of engagement.