Which benchmark indicates that the primary search of a structure is complete?

The benchmark indicating that the primary search of a structure is complete is "Primary Search Complete." This term specifically refers to the systematic examination of all areas within a building to locate any potential victims and assess the overall situation to ensure that no individuals remain in danger. When this benchmark is achieved, it not only signifies that the search for victims has been methodically conducted but also provides critical information to incident commanders regarding the status of personnel and the structural integrity.

Other benchmarks mentioned, such as "Water on the Fire" or "Knockdown," relate to firefighting operations. "Utilities Secured" refers to ensuring that utilities such as gas, electricity, and water are turned off to prevent further hazards. While each of these elements plays an important role in emergency response, they do not specifically denote the completion of the primary search process, which focuses solely on human safety and patient recovery. Thus, the completion of the primary search is distinctly marked by the establishment of that benchmark.