As an investigator, before arriving at the fire scene the fire fighters had arrived and managed to extinguish the fire. The fire fighters adhered to the size-up factors and strategized on the effective strategies and tactics that could be used with the lowest level of risk. According to International Association of Fire Chiefs and National Fire Protection Association (2014), fire fighters always consider the possibility that lives could be in the burning structure; that is why rescue and search are done simultaneously as the fire is extinguished. The sizes up factors include the occupancy of the house in terms of the type of materials in the house. Consideration of the occupancy helps fire fighters to assess the level of risk to the occupants and the civilians. In addition, the fire fighters also considered the time in terms of the exact time and season of the year; time influences rescue and search operations. According to Gustin (2009), an incident of fire in a kitchen requires immediate search in the living rooms; the season determines the possible cause of fire for example, whether it is fire spreading from one building to another due to strong winds. In addition, some seasons in some areas are prone to hurricane; as such, fire fighters must be prepared to cut hurricane shutters. Furthermore, the fire fighters considered the available fire fighting resources and the size of the building; old buildings are relatively smaller than modern buildings. After the fire fighters had extinguished the fire, they established that there were no causalities or fatalities that arose from the fire. They also noted that electricity connection, mains gas and water supplies were safe and did not cause or contribute to the fire. It is therefore the duty of the investigator to determine the cause of the fire. The first individuals to arrive at the scene are the first responders; in this regard, the first responders are the fire fighters and first witnesses. On arrival at the fire scene, a mental note of all that are at the scene including the conditions of the scene, the people around the scene and any other unusual activities at the scene are noted. In addition, the nature of the structure in terms of whether it is a residential or a commercial structure and the nature of the occupancy will be noted. Furthermore, the time of arrival and the prevailing weather condition will be mentally noted.