When can deadly force be used in the state of Wisconsin?

In Wisconsin, deadly force may be used in self-defense when an individual reasonably believes that it is necessary to prevent imminent death or great bodily harm to themselves or others. The use of deadly force is justified only if there is no reasonable alternative to avoid the threat, and the individual must be in a place where they have a right to be. Additionally, Wisconsin's "Castle Doctrine" allows individuals to use deadly force in their home without a duty to retreat. However, each situation is heavily fact-dependent and must be evaluated on its specific circumstances.