We've seen tabletop exercises before; annually schools, businesses and other organizations across the globe participate in Great Shakeout drills so employees, students, and families can practice what to do in event of an earthquake. https://www.shakeout.org/ 

Tabletop exercises can be useful in more than just earthquake scenarios. In fact, FEMA has access to a number of different scenarios here:  https://www.fema.gov/emergency-planning-exercises

 As the world is facing the COVID-19 pandemic, it is important to note that the U.S. Department of Health and Human Services has a  resource that features exercises that are specific to pandemics, and includes a wealth of pandemic healthcare planning, technical assistance responses, and other resources which can be found here. In addition, access to a tabletop exercise geared to the private sector, including owners/operators, company legal counsel, communications teams, Human Resources, and other key company leadership, along with PowerPoint slides, a facilitator guide, a participant handbook and other resources can be found here.