Which of the following is NOT a category for structure triage?

In the context of structure triage, categories are established to assess the defensibility of structures against wildland fires and to prioritize resources effectively. The correct answer, immediately defensible, is not an official category typically recognized in this triage process.

The categories generally include threatened non-defensible, which refers to structures that cannot be effectively defended due to their location or conditions around them; threatened defensible, representing structures that can be defended but are currently under threat; and non-threatened, indicating structures that are safe from immediate fire danger. Each of these categories plays a crucial role in firefighting strategy, helping responders determine where to allocate their resources most effectively.

Having immediately defensible as a choice diverges from the standardized categories that are used in practice, which do not encompass the term "immediately defensible" as an established category. Instead, the focus is typically on the status of the threat and the feasibility of successful defense against a wildfire, which is reflected in the other three categories.