What is the recommended use of S-390 results in planning firing operations?

• A. Use them to inform safe placement of lines and anchor points and maintain safety buffers
• B. Use them as the sole basis for decisions
• C. Ignore them if time is short
• D. Assume they are always accurate without verification

Answer: (A)

Using S-390 results to inform where to place firing lines and anchor points and to maintain safety buffers is the practical way to turn predicted fire behavior into a workable plan. These results translate flame length, spread tendency, and intensity into actionable guidance for where lines and anchors should be laid and how much distance to keep from fuels, roads, and crew positions, enhancing crew safety and control effectiveness. They’re a critical input, but they should be integrated with terrain, fuels, weather updates, and real-time observations, not treated as the sole basis for decisions or assumed perfectly accurate.