For the purposes of this section, "deadly force" means force which the actor uses with the purpose of causing, or which the actor should reasonably know creates a substantial risk of causing, death or great bodily harm. The intentional discharge of a firearm, other than a firearm loaded with less lethal munitions and used by a peace officer within the scope of official duties, in the direction of another person, or at a vehicle in which another person is believed to be, constitutes deadly force. "Less lethal munitions" means projectiles which are designed to stun, temporarily incapacitate, or cause temporary discomfort to a person. "Peace officer" has the meaning given in section 626.84, subdivision 1.
(1) to protect the peace officer or another from apparent death or great bodily harm;
(2) to effect the arrest or capture, or prevent the escape, of a person whom the peace officer knows or has reasonable grounds to believe has committed or attempted to commit a felony involving the use or threatened use of deadly force; or
(3) to effect the arrest or capture, or prevent the escape, of a person whom the officer knows or has reasonable grounds to believe has committed or attempted to commit a felony if the officer reasonably believes that the person will cause death or great bodily harm if the person's apprehension is delayed.