Iowa J.I. Crim. § 400.21 (2018)
Iowa Criminal Jury Instructions
CHAPTER 400 JUSTIFICATION
400.21 Use of Deadly Force in Making Arrest
Deadly force is only justified in making an arrest when a person cannot be captured in any other way and either (1) the person has used or threatened to use deadly force in committing a felony or (2) the person making the arrest reasonably believes the person would use deadly force against another unless immediately apprehended.