Your link did not work for me, think it is: Accidental shooting of Lincoln County deputy | KTVB.COM Boise
This thread is not to be used to bash LEO. Just something to watch to see what went wrong.
President & Chief Instructor
Broken link -- It doesn't point to a valid page...
Rule #2 - Never point the muzzle in any direction that should a discharge occur a human injury would result.They did say it was not another officer's fault.
Hand cut, Hand stitched, Hand made
One point we can drive home with this is it was an "Instructor Course" so they were experienced shooters. We do not know the details but as SGB pointed out Rule number 2 may have been broken.
“An armed society is a polite society.”