Final Answer:
The three combat positions of a fire sketch plan are the attack position, support position, and reserve position.
Step-by-step explanation:
In fire management, the fire sketch plan outlines strategic positions for effective combat. The attack position is where the primary firefighting efforts are concentrated. It involves deploying resources directly against the advancing fire front. This position is crucial for containment and extinguishment.
The support position plays a complementary role by providing backup and assistance to the attack position. It strategically places resources to reinforce the attack and prevent the fire from spreading uncontrollably. Adequate support is vital for maintaining a sustained and coordinated firefighting effort.
Lastly, the reserve position serves as a precautionary measure. Positioned strategically, it holds additional resources in readiness, acting as a backup to both the attack and support positions. This ensures that if the situation escalates or unexpected challenges arise, there are readily available forces to address them. The combination of these three positions in a fire sketch plan optimizes the allocation of resources and enhances the overall efficiency of firefighting efforts.