More evidence that Callaway helped load the body into the ambulance BEFORE he got on the police radio to report the shooting...
And then I got out of the cab and run down there; the ambulance had already arrived by the time I got there, and they were in the process of picking the man up, and they had done had him, was putting him on the stretcher when I got there, and they put him in the ambulance and took him away, and there was someone that got on the radio at that time and they told him he was going to report it, so they told him to get off the air, that it had already been reported, and he picks up the officer's pistol that was laying on the ground, apparently fell out of his holster when he fell, and says, "Come on, let's go see if we can find him." -- William Scoggins
The police tapes also tell you that the body was loaded and the ambulance was leaving the scene as Callaway got on the police radio.