The dynamic decision-making (DDM) competence of first level rescue incident commanders have been assessed using Virtual Simulation-based Training (VSBT) and Effective Command (EC) behavioral marking framework for more than seven years in Estonia. VSBT is well studied and a very promising training method for first responders’ DDM. Although the EC has been used, there has been no longitudinal study about incident commanders’ DDM using VSBT. Therefore, there are no training suggestions provided to organizations that take into account the commanders’ individual development paths. We explored how the commanders’ DDM competence has changed from 2017 to June 2024. An analysis of 1133 certificates explored performance variations and commander profiles, serving as a foundation for tailoring suggestions for training methods according to the strengths and weaknesses of DDM behaviors. First, we found that incident commanders perform better in the first two levels of situational awareness: perception and comprehension; and planning. The lower scores concern the third phase of situational awareness: prediction, as well as communication, and review behaviors. We identified three groups of commanders: first, the “progressors”, are commanders whose overall assessment results have been excellent, or have improved over time. The second group is the “stagnants”, whose overall results have remained constant over the different assessments. The final one refers to the “regressors”, who are commanders whose competences have decreased over the years. We provide training suggestions that could play a role in the development of DDM behaviors.