. >> as the dash, rolls, sergeant kellermann makes numerous attempts to negotiate with hill, but theply. >> put the gun down, man! put it down! >> no! >> what's going on? >> in talking to him the whole time, i basically got my pistol out and i pointed it at him and he opened with the shotgun, and i thought he would disarm it, and he was looking to make sure it was loaded. >> police backup arrives and quickly gets into position. they wait for hill to make a move. >> come on, man! >> i saw that he had taken a defensive posture and he was laying across the trunk of the vehicle pointing his firearm toward sergeant kellermann, and i knew as soon as i pulled in and i looked over i had a good shot. >> when you get on the scene like that and you make a decision that deadly force will have to be used pretty quickly especially after he looks at the breach of the weapon and he cocked it back, and i knew there was going to be a shooting. >> the gunman fires a single shot striking sergeant kellermann in the face. >> i was still trying to communicate with him and he was trying to put the gun down

i knew that they were going do anything they could to protect me and sergeant kellermann, and at thatown. he is fatally wounded. >> stay down! stay down! stay down! >> officer raleigh tends to his fallen colleague out of the camera's view, but the dramatic moments are captured on the dash cam's microphone. >> tell my wife i love her. >> i will. >> you're fine. >> when i saw the blood coming out, and the amount of blood the first thing i thought was i'm losing way too much blood to make it. there's no way you can lose this much blood to live, and at that point officer tyson was basically at my side. >> you're okay, buddy. >> all right. >> stay right here. >> you're with me, you're going to be okay. >> you're going to be okay. i think you're going to be okay. all right? >> i keeping can him how bad it looked and how bad's my eye? >> you don't look pretty. >> you weren't pretty before, jim. >> he was even looking at me saying you didn't look good before the shooting. it took me a minute to realize, hey, i'm still getting humor out of this. i can hear everything he's saying and sergeant k