One more thing: It means the local LEOs, the FBI, the School, and the Broward County School District all knew this guy was a threat, up to and including the bullets at school in the backpack.
In other words, they were begging for this Cruz kid to come on campus and kill all of these people. Begging for it.
No law could have stopped this. Only a guy with a gun giving young Cruz a moment of pause.
“...up to and including the bullets at school in the backpack.”
That in and of itself may have been cause for alarm or not. The guy was in the ROTC program and could have forgotten about them. However - his other behavior (like why they felt they needed to search his pack), in conjunction with the bullets should have raised the level - which it did. “Okay - we’re going to nip it in the bud right now - you can’t bring a back pack to school!” That, and the 30+ times he has been visited by the cops.