Firemen from Indiana Department of Homeland Security District 4 in Lafayette, Indiana, keep water on a fireman as he closes a valve on an open gas line at the mock oil refinery during National Level Exercise 2011, a full-scale exercise meant to represent the destruction following a 7.7 magnitude earthquake along the New Madrid fault line. The exercise, taking place at Muscatatuck Urban Training Complex May 16 - 20, will examine the government's ability to implement local, state, and federal catastrophic earthquake response plans.