Round 2 of the battle of the crash reconstruction experts

The prosecution fought tooth and nail to keep Karen Read's ARCCA witnesses from testifying, but the first of two took the stand Friday. Here's what he said — when the judge didn't sustain objections to the questioning — and what it was like in court. Plus, a former police chief reflects on the recent officer testimony in the trial, a former juror answers some key questions on how objections are seen from the jury box and much more.    You can watch the TV version of this episode — and all the others, as well as video from court as it happens — on our YouTube page. Subscribe here: www.youtube.com/@NBC10Boston If you have questions on the case, send them to us at Canton.Confidential@nbcuni.com