Which of the following is NOT a Common Denominator of Fire Behavior on Tragedy Fires?

The correct choice highlights that most incidents associated with tragedy fires do not typically occur in open fields. Instead, tragedy fires often take place in more confined environments such as residential areas, forests, or structures, where the fire behavior can be influenced by numerous factors including fuel loads, proximity to buildings, and wind patterns.

In contrast, the other options accurately reflect common characteristics of fire behavior that are significant in the context of tragedy fires. Fires responding quickly to wind changes can lead to dangerous situations for both firefighters and the public. Similarly, fires running uphill speedily can be particularly hazardous as they can outpace efforts to control them, and the potential for flare-ups in light fuels further exacerbates the dangers, creating a volatile situation that can lead to tragic outcomes. Thus, the unique conditions under which fires are likely to become tragedies highlight why the statement regarding open fields is the one that does not fit within the common denominators of fire behavior during these critical incidents.