Homeland Security professionals respond to many different kinds of events. The challenges they face range from tactical incident response events, to major multi-state disasters. They can have medical, law enforcement, and emergency response forces responding to the same event. The complexity of these response operations, and the need to coordinate with a large number of entities, means that games have become an integral component to building emergency response capability. As a result of this the Department of Homeland Security has established a number of programs that incorporate games into federal, state, and local planning, training, and rehearsal. Games for homeland security range from played with the Principals at the White House to games by individual police and fire departments on response within their own communities.