Emergency Operations Center Manager Howard Hatayama (left) directs the proceedings at Tuesday's earthquake simulation exercise in the Lab Fire House. The emergency team, clustered in task-specific groups designated by colored vests, worked on a scenario in which a quake similar in intensity to the 1906 San Francisco temblor struck the region just after midnight. Reacting to information provided by a "sim team" and various phone messages challenging its ability to respond, the emergency team tested overall preparedness and worked on the systems that will be required if the "big one" really does hit. Dan Lunsford and Genevieve Pastor-Cohen, in rear at the door, coordinated Berkeley Lab's role in the city-wide exercise.