Which of the following is NOT a responsibility of a canine-handler?

In the context of a canine-handler's responsibilities, the primary focus of their role is typically on specific tasks related to the detection and investigation of fires and explosives. While conducting search operations for missing persons is an important function within the broader realm of canine services, it does not fall under the specialized duties of a canine-handler who is specifically trained for fire investigation.

A canine-handler's responsibilities primarily include maintaining their skills through ongoing education and training, ensuring the dog is well-trained in basic obedience, and executing tasks directly related to fire and explosion investigations, such as detecting ignitable liquids. These activities are essential for ensuring the effectiveness and reliability of the canine in relation to fire investigations. Therefore, while search operations for missing persons are significant, they are not a core responsibility of a canine-handler focused on fire and explosion investigations.