According to standard policies, when should search and rescue be initiated?

The correct choice emphasizes the immediate action required by first-in units when a situation emerges that necessitates search and rescue operations. Prompt initiation is crucial in such scenarios to ensure the safety of any individuals who may be trapped or in danger. By starting these efforts as soon as possible, responders maximize the chances of successfully locating and assisting those in need before circumstances potentially worsen.

Starting search and rescue immediately after an incident assessment could delay crucial actions when time is of the essence. Additionally, relying on the availability of personnel might lead to indecision and postponement of actions that could save lives. Waiting until fire suppression begins further complicates matters, as it assumes that conditions are stable enough to begin search efforts, which may not always be the case. Thus, the priority is to mobilize search and rescue teams as quickly as possible rather than getting bogged down by other operational steps.