What are the three stages of threat evaluation?

The correct answer identifies the three stages of threat evaluation as possible, credible, and confirmatory. This framework is designed to systematically assess the likelihood and seriousness of potential threats to a water distribution system or another context.

The stage of "possible" refers to determining if a threat could feasibly occur, taking into account various risk factors and scenarios. Once a possible threat has been identified, the next stage, "credible," assesses whether there is sufficient evidence or intelligence to indicate that the threat is likely to materialize. Finally, the "confirmatory" stage involves gathering concrete proof or confirmation about the threat, often leading to a decisive response or mitigation strategy.

This progression ensures that evaluations are grounded in a logical assessment of risks, allowing for prioritization of responses based on the likelihood and severity of threats. Each stage plays a critical role in preparing and planning effectively against those threats, ensuring that water distribution systems are protected and resilient against potential challenges.