Effectiveness metric | Protect strategic response | Maintain strategic response |
---|---|---|
Tr Ratio of total amount of fireline to final fire perimeter | • Tr ≥ 1 • Suppression strategy full perimeter control • Significant amount of fireline burned over • Significant amount of indirect or contingency line that never engaged fire | • Tr < 1 • Suppression strategy not full perimeter control |
HTr Ratio of amount of held (successfully engaged) fireline to total amount of fireline | • HTr << 1 • Engaged fireline not effective in all locations | • HTr ≤ 1 • Engaged fireline generally more effective |