I read the article carefully to see if there was a environment where an armed "actor"
could have been taken down by an unknowing adult/teacher, and then his weapon
used (in apparent self defense) on other "actors". (Then there'd be hell to pay as
the courts tried to figure that one out.)
In this case however, the article only describes it as being ".. the school resource
officer and another police officer systematically entered classrooms with weapons
in hand — one had a loaded pistol and another had an unloaded AR-15."
So apparently both were known and/or in uniform.... a slightly different bent to things
than might otherwise be inferred.
Still.... not too smart at all. You do have to wonder about just the basic intelligence
of the educrats who've somehow filtered up through the system.
post: The included pic series of "People who want more guns in schools" was a classically-breathless Huffington Post footnote.