What is one key factor to consider when assessing fire behavior outdoors?

When assessing fire behavior outdoors, the type and condition of vegetation is a critical factor to consider. Vegetation plays a significant role in how fire spreads, as different types have varying moisture contents, chemical compositions, and structures that can either fuel or inhibit combustion. For instance, dry grass burns much faster than green, leafy plants, which contain more moisture and may resist ignition. The arrangement and density of vegetation can also create pathways for fire to spread, affecting its intensity and direction. Understanding the fuel characteristics provided by the vegetation helps firefighters anticipate fire behavior, plan effective strategies for control, and ensure safety during outdoor firefighting operations.