Which of the following is NOT considered an indirect search tactic?

The option identified as the correct answer refers to walking trails inside the search area, which is indeed a direct search tactic. Direct search tactics involve physically searching a specific area where the subject might be located, making it an active approach to locating missing individuals.

In contrast, the other choices exemplify indirect search tactics. Searching perimeter trails involves looking at the outer boundaries of a search area, which can provide valuable information about the potential movements of the subject. Using radar to search allows for a technological approach, enhancing visibility and detection without physically entering every area. Maintaining surveillance of the area aids in monitoring the situation without directly engaging in a search, thus enabling the gathering of critical information regarding the missing person's potential whereabouts.

Understanding the distinction between direct and indirect search tactics is essential in SAR operations, as it influences strategy, resource allocation, and overall effectiveness in finding missing persons.