I haven't seen the video because I have really slow dial-up. Seems like the cop messed up; but, a witness said it was pitch dark. It's possible the cop thought the airman was about to pull a gun. Although it also seems the cop was acting pretty strange anyway, yelling for over a minute. This is a strange case.
Not is you listen to the deputy's words. This was simply
Adrenalin pumped aggression. He told the Sr. Airman
to get up and then shot him and said you don't get up
as if it had been a taunt.