In the OATH method of signaling on a search line, two tugs represent:

In the OATH method of signaling on a search line, two tugs are designated to indicate "Advance." This method relies on a simple and effective communication strategy for firefighters operating in a zero-visibility environment, ensuring that team members can convey their status and intentions clearly without verbal communication.

The "Advance" signal allows team members to understand that they should continue to move forward in their search efforts. This is particularly important in emergency situations where clarity and speed are vital; thus, recognizing these signals can enhance teamwork and safety.

The other signals in the OATH method include one tug for "Return," three tugs for "Help," and a continuous tugging for "Stop." Understanding these signals and their meanings is crucial for effective navigation and collaboration during search and rescue operations.