What is an important factor when performing operations in hot weather?

When performing operations in hot weather, being aware of surface integrity is vital because high temperatures can significantly affect the materials and surfaces that firefighters are working on. Heat can weaken surfaces, such as roofs or bridges, increasing the risk of structural failure under the weight of firefighters or their equipment. Being knowledgeable about how heat impacts these surfaces helps ensure safety and can prevent accidents that could result in severe injuries or mission failure.

While using cooling systems, monitoring hydration levels, and minimizing air pressure in hoses are important aspects of working in hot conditions, they are more directly related to personnel welfare and equipment functionality rather than the structural integrity of the environment in which operations are taking place. Understanding how environmental conditions can alter physical surfaces is paramount for making safe operational decisions during firefighting activities in extreme heat.