After checking in with the IC and obtaining a briefing, what should ISO Mackintosh do next?

In the context of incident management, the first step following a check-in with the Incident Commander (IC) and obtaining a briefing should focus on assessing the situation at hand. This is commonly referred to as "sizing up" the incident.

Sizing up the incident involves gathering crucial information about the current state of the situation, including the scale of the incident, available resources, environmental factors, and overall safety considerations. This step provides a solid foundation for making informed decisions and developing an effective response strategy. It encompasses understanding the dynamics of the incident, which is essential for any subsequent actions that the ISO may need to take.

By properly sizing up the incident, ISO Mackintosh can effectively communicate any necessary risks, contribute to situational awareness, and ensure that safety protocols are in place for personnel and resources involved in the response. This initial assessment also lays the groundwork for the next phases of incident management, such as developing strategies, objectives, and identifying necessary ICS forms for the Incident Action Plan (IAP).