That said, police are human beings and can freeze or otherwise freak out. Nobody ever knows how they're going to react in the moment for the first time.
Where do they draw the line for a "serious offense"?
You forgot that they were trained to expect the unexpectable. They are not like you and me with no prior training against violence.
Why the 26 minute tape delay? Has Jake Tapper asked this question? If so, I haven't seen a good answer. Certainly it wouldn't be to help the SRO control any video evidence of criminal behavior. that's crazy talk.
Police nowadays are trained to consider their own safety too much, and the safety of the public too little. They are trained to protect and serve themselves in dangerous situations. That Means too often they shootiminnocent black people and people with mental illness to avoid taking the risk that the person in front of them might hurt them.
Their training should instead put more emphasis on their selfless duty to protect the public at some personal risk. Then, when the frightful duty to rush toward gunfire arises, in the back of their mind will be the thought that taking risks to protect people is what they signed up for.
To me it just emphasizes, underlines, highlights that we cannot rely on a good guy with a gun to take out a bad guy with a gun, even one with lots of training not to mention a teacher.
You can train and train and train, and still freeze when encountering a traumatic situation for the first time. It's just one of the unpredictable things about human nature. And not many cops have every actually fired their guns in the line of duty.
I'm afraid, though, that it will always be difficult to expect a police officer who usually patrols school hallways looking for truants to suddenly shift gears and execute a probably suicidal attempt to stop a shooter. If we want school police officers to be ready to do sacrifice their lives to take down shooters, they have to get more specific, ongoing training. Or we could prevent shooters from getting guns.
That said, police are human beings and can freeze or otherwise freak out. Nobody ever knows how they're going to react in the moment for the first time. It's easy for armchair quarterbacks to call that SRO a coward, but IMHO that judgement should be leavened with some empathy for someone encountering a traumatic situation for the very first time.
That SRO must be going through hell right now, going through a lot of "if only" scenarios in his head. Yes he failed to do his job and possibly lives were lost as a result, but I personally am not lining up to spit on the guy.