In May 2011, trainers from Western Shelter Systems planned to assist statewide disaster preparedness drills in Mississippi. Their plans changed when the Mississippi River surged to record levels, displacing tens of thousands of people and threatening to burst levees protecting major cities. The planned exercises where cancelled as agencies around the state instead prepared to face an actual disaster. In Yazoo, MS, a potential levee failure threatened four regional hospitals and several communities. There, employees of Western Shelter Systems and MSSMAT put their knowledge to a real world test—deploying a 20-bed field hospital, triage center and command post that would serve as the front line should disaster strike.