This sounds like the incident I saw on TV the other night. Raghead was running across rooftops shooting at Marines, they were shooting back. No sure if he was shot or fell between 2 buildings, someone yelled to the Marine to look over the wall between the buildings. He looked over the wall, pulled up his weapon and fired a couple rounds, then said, "He's gone".
The camera could not see the other side of the wall, he may have pointed his weapon at the Marine or was attempting to run or any number of other things. To say he shot him in cold blood is pure BS because the camera only showed the Marine, a 5 foot wall and 2 buildings about 2 feet apart.
"...someone yelled to the Marine to look over the wall between the buildings."
Next time the marines should yell to the cameraman to look over the wall.