I'm not saying these aren't FBI agents, but the reasoning he's using is specious and doesn't support his conclusion. I was a QRF fire team instructor and team leader, and we trained people to use whatever stance works best for the shooter and the situation, whether it's isosolese, Weaver, modified, or gangsta side grip, etc. We know there are military veterans aligned with Antifa-BLM, we shouldn't be surprised to see them using low-ready. Stance alone indicates nothing beyond the gunman having at least some minimum training. Pretty much the same for the earpiece, it indicates coordinated communication with others, it's not exclusive to government agents.

I don't want to knock the author, but as self described Army Captain with FBI training, he should know this. I think he's jumping to conclusions on pretty shaky evidence. I'm not saying there aren't FBI instigators, but this is not solid evidence of anything.