Rewatch Trooper Paul Cross from Trial 1 in the Karen Read case

Rewatch Trooper Paul Cross from Trial 1 in the Karen Read case
The crash reconstructions should be the next one up for the Commonwealth in the Karen Read trial, so to get ready for that, I’m going back to the cross-examination of Trooper Paul, the Massachusetts State Police crash reconstructionist from the first trial.
If he already did the accident reconstruction, why did the prosecution bring in a new expert from outside the MSP this time?
Let’s watch the testimony and see what might’ve gone wrong.