The document describes a tabletop exercise conducted between the Railway and NDRF to simulate their response to a rail accident scenario. It provides background on tabletop exercises and guidelines for the simulation. The scenario involves a train derailment with multiple casualties. Participants discuss their response plans and coordination, identify issues, and develop an action plan to improve preparedness. The exercise uses periodic "injects" to further develop the scenario and assess the response. Overall, the goal is to evaluate response plans and inter-agency coordination for rail disasters.