I read it here as:
The man with radio ordered warning shots, then one in radiator - and it seems that *these didn't happen* -?- or happened way too late? and then he escalated to, STOP THEM! Unclear which of the above (to me).
So it enters the realm of nebulosity and culpability. A C&C fuckup that wasn't cold-blooded so much as failure to follow immediate orders. (If this version is even close-enough to true, natch)
Ugh. 25 mm HE shell (I presume HE) in an SUV.
Ashton