Ran across this editorial by Brandon Friedman in the NY Daily News:
Arming teachers in the classroom will cost kids' lives
...
There were armed guards at Columbine, the Pulse nightclub and in Las Vegas at the time of the massacre. At Parkland too. Time and again, armed civilians or security guards are out-maneuvered, out-gunned and too inexperienced. It’s difficult for a rational person to reach a state where they can go toe-to-toe with an armed psychopath who has nothing to lose. I was professionally trained and still almost blew it at the moment of truth.
Ignoring the rest of the claims, were there indeed armed guards (in any real sense) at Columbine High School in April 1999?