Real Property & Premises Known as 4408 Hillside Court, Alexandria, Virginia 22306 v. United States

holding that where suspect was about to run over officer with his car, use of deadly force in self-defense was constitutional | holding that where suspect was about to run over officer with his car, use of deadly force in self-defense was constitutional | refusing to infer an unconstitutional custom or policy from a municipality’s failure to discipline an officer for a single incident | use of deadly force to prevent officer’s own death or serious bodily harm was justified | "[R]egardless of what had transpired up until the shooting itself, [the suspect's] movements gave the officer reason to believe, at that moment, that there was a threat of physical harm." | where suspect was about to run over officer with his car, use of deadly force in self-defense was constitutional | “[Regardless of what had transpired up until the shooting itself, [the suspect’s] movements gave the officer reason to believe, at that moment, that there was a threat of physical harm.” | city’s failure to discipline police officer for isolated incident involving alleged use of excessive force to effect arrest did not give rise to inference city had official policy authorizing or encouraging police misconduct