Final answer:
The first responding officer to a hostage/barricade situation will assess the situation, secure the scene, and begin communication efforts, ensuring public safety and gathering information for tactical teams.
Step-by-step explanation:
According to the Hostage-Barricaded Subject directive, the first responding officer to a hostage/barricade situation will assess the situation and establish command by securing the scene, calling for additional resources, and beginning communication with the barricaded subject if possible.
They are responsible for ensuring public safety by creating a perimeter around the affected area and controlling the movement of people in the vicinity to prevent the situation from escalating. Their immediate action will include the careful evaluation of the threat and gathering as much information as possible to inform tactical response teams and negotiators when they arrive.