The Cybersecurity and Infrastructure Security Agency (CISA) joined with public and private-sector partners to conduct an interagency Tabletop Exercise (TTX) called “National Harbor 2020 – Recovery Phase Exercise,” September 29 – 30, to test the processes and plans required by regional government and business partners following a notional catastrophic incident at National Harbor outside of Washington, D.C.

Exercise participants included the National Harbor Security Consortium (MGM National Harbor, Gaylord National Resort & Convention Center, Peterson Companies National Harbor and additional entities), leaders from Prince George's County and the State of Maryland, and various federal-level and regional partners.