Not true, I read on FR that according to the Independent Ballistics report that the husband and wife never knew what hit them.
It is not quite the same thing.
And, the independent ballistics review was only one of at least three crime scene evaluations.
The Grand Jury focused on exactly what happened with the crime scene and ballistics is ongoing, as I recall. They DA says they are looking at who fired what, when and who hit who. So, it is still somewhat indeterminate.
It is the last part of a three part investigation by the DA, into the whole mess. At least six police charged with felonies, so far.