He was a soldier who was situationally unaware that he was in a combat zone, and the group ahead of him were probable hostiles.
In such a situation, the best thing to do is to increase distance (slow down and let them get further ahead, or cross the street). If they change course to intercept, then they have confirmed hostile intent, and you should be prepared to draw rather than allow them to come into contact distance, plus "check your six" for additional hostiles.
> ...plus “check your six” for additional hostiles.
Minor note: “back to the wall first”, since it limits the hostiles from 360 degrees to first 270 degrees then to 180 degrees. Once you know your back is clear you can go dynamic again. Shouldn’t take long.
Then, if you are armed, if it is a group, a deep doorway is good to further narrow their approach, and limit any large long weapons, like baseball bats.
The video evidence clearly shows that the point man in the initial assault came from the 3 o'clock position at an extemely accelerated pace, with the attack force following. All of whom were availing themselves of the natural cover being provided by the vehicle. The final assailant was clearly providing backup support in the event the target should become aware of the ambush that was awaiting him and likely prepared to launch his own assault had the victim been permitted to enter retreat mode.
I'm sure he was on full situational awareness alert but the nature of the attack, the numbers of overwhelming force involved prevented him from taking any immediate evasive maneuvers.....
And not having the advantage of any back-up support personnel, he was screwed..........