No, you remember wrong, perhaps because you're trying to inject common sense into a criminally stupid situation.
Terry and the BORSTAR crew were sent into Peck Canyon in search of a group of armed robbers who were preying on illegals making the trip north. They were the ambushers. They were mandated to use less-lethal in their initial contact and attempts to apprehend the AK-toting felons. Who
signed off on ordered the criminally negligent ROE has not yet been revealed, and I'm blaming Napalitono, since BORSTAR is not a Sector asset.
"To spit on your hands and lower the pike; to stand fast over the body of Leonidas the King; to be rear guard at Kunu-Ri; to stand and be still to the Birkenhead Drill; these are not rational acts. They are often merely necessary." Pournelle