The aim of the study was to examine the emergency personnel’s perception of the effects of exercises, with regard to learning and usefulness. The exercises were quasi-experimental and constructed in such a way that employees from different organizations overlapped each other’s tasks. This was accomplished by: having asymmetries included in the scenarios, repeating exercise procedures and testing different strategies, which were discussed at joint seminars. The exercises were compared to a similar study, published in this journal, of nonquasi-experimental but merely traditional exercises. Surveys were distributed and collected from emergency personnel in connection with seven exercises. At the exercises, 94.3% of the personnel thought that the exercises had a focus on collaboration (traditional exercises, 75.6%).