Under what condition is the use of deadly force justified?

The use of deadly force is justified when there is probable cause of an imminent threat of death or serious injury. This standard reflects the principle that law enforcement personnel may resort to deadly force in situations where they or others are in immediate danger, necessitating a response to prevent serious harm or loss of life. It emphasizes the need for an imminent threat—meaning that the danger must be immediate and present, rather than based on past actions or generalized beliefs about a suspect's behavior. The justification hinges on the urgency of the threat, ensuring that any response aligns with the principles of necessity and proportionality in the use of force. This rationale is deeply rooted in self-defense and the protection of others, highlighting the belief that preserving life is of utmost importance in critical situations.