Barta, JiříKalenda, Jiří2020-12-012020-12-0120201336-0019http://drepo.uniza.sk/handle/hdluniza/387Exercises of the crisis management authorities, which test and verify both plans and capabilities, form part of the crisis preparedness. This article deals with the preparation and implementation of the exercise of crisis management authorities in the Czech Republic. The first part of the article deals with the preparation and putting into practice of crisis preparedness training using software and simulation tools and selected modules, tested at the gas supplies breakdown of large scale. Next part of the article focuses on the training of the crisis management bodies, describing all preparation and implementation phases. The results of the exercise were applied in an evaluation, which detected problems in the field of crisis communication. The exercises tested a simulator, which is being developed. This simulator allowed to record communication and thereby to create conditions similar to the real situation. Simulation has a considerable impact on preparedness due to the possibility to test and verify plans and capabilities of included bodies, identify deficiencies and create an environment for improvements.skhttp://creativecommons.org/licenses/by/4.0/Crisis ManagementEducationPractical ExerciseSimulationArticlehttps://doi.org/10.26552/krm.C.2020.2.60-67