Abstract: Evaluation after exercise and incidents—often called After Action Review or AAR—are important to enhance the emergency management (EM) response capability. However, evaluation supporttools for event reconstruction after incidents and exercises are not yet fully available. We engaged EM stakeholders in a tabletop exercise based on snow chaos and car accidents scenarios to evaluate a fully functional prototype. The tool assists information sharing in real-time and enhances debriefing process of any EM response and exercise. Analysis of reflective discussions and an open question survey shows that the EM participants consider the features of the prototype to facilitate better learning from incidents. However, they have different attitudes concerning the adoption, management, and application of the tool in organizations. For instance, more security features are required to comply with regulations. We argue that the tool is an important first step to fill the gap on the need for “event reconstruction-based evaluation.”