the camera out. moments later all hell broke loose. >> collier is shooting at the officers in the street. rookie officer tim mcfarland in the foreground uses greg's car as cover. >> i zoom in on the officer across the street. i see he has his hands up to his throat and has blood coming down his hands. >> it's mcfarland's partner officer jared slocumb. he's been shot in the left temple. it has exited the rear of his head. >> when i saw that he was shot, i was scared. i was, like, okay i'm going to have to go get my partner. because he's got to go home tonight. >> couching behind collier's white pickup truck, officer slocumb clutches his neck. a reaction caused by the head injury.