Which statement best describes the primary purpose of a size-up during the initial response?

• A. To document weather and wind conditions
• B. To identify hazards, resources, access points, and establish priorities for action
• C. To assign tasks to individual responders based on authority
• D. To confirm incident objectives and expected outcomes with external agencies

Answer: (B)

Size-up is the on-scene, rapid assessment you perform at the start of an incident to understand what you’re dealing with and how to respond safely. The main purpose is to identify hazards, determine what resources are available, locate entry and escape routes, and establish priorities for action. This information shapes the initial action plan, guides how you deploy people and equipment, and helps protect both responders and potential victims as you begin stabilization or rescue efforts. Weather notes and wind conditions can be relevant, but they aren’t the central focus of the initial size-up. Assigning tasks based on authority and confirming objectives with external agencies happen later within the incident command and planning process, not in the core on-scene size-up.