In order to increase the situational awareness for real-time operations in control centers, more and more utilities have installed various real-time tools for power system security assessment. The main stream of these tools is still model-based methodology, which rely on the accuracy of the models of system events among other models. Therefore, system event modeling plays a crucial role in evaluating the impacts of potential cascading outages for increasing situational awareness. The objective of the panel is to provide a platform for users/vendors to share experiences on modeling cascading system events in an integrated EMS/DSA environment. To achieve this, the panel will invite EMS/DSA users who are using EMS/DSA in control centers for real-time operations. They will be encouraged to prepare the panel presentation with vendors to cover details about the modeling processes and the state-of-the-arts.