But later when he is considering an anomaly in the recording, it looks to me like he is unable to identify echoes occuring just a tenth of a second or so after the original sound. There's a whole sequence of gun shots which appear to have such echoes.
The officer whose body cam created some of these recordings may well have "exposed" himself, not to what he thought was the direct line of gunfire, but perhaps to an indirect path for slightly delayed echoes.
No doubt there will be a lot more learned from these recordings.
“No doubt there will be a lot more learned from these recordings.”
—
With the authorities inability or unwillingness (or both) to get to the bottom of the attack, all the video and audio will be scrutinized by audio hobbyists and theorists for a long, long time to come. It’s grassy knoll deja vu time all over again.