I found on another forum and had to share. It's the LASD report on their M&P "problems." Link to the report: https://oig.lacounty.gov/Portals/OIG...e%20Report.pdf
I haven't had a chance to read every page, but it includes gems such as this (Page 20): "A deputy was inexplicably directing traffic with the weapon-mounted light rather than with a flashlight as trained by the LASD. The deputy discharged one round while doing so. This gun light did not have a grip switch attached."
The conclusions seem to support the idea that the ND's were a training issue. Not surprising since my cursory scan showed they had two-hours to get used to the WML.