Thoughts on the Texas School shooting here. Bit of a self-doxx but I am retired teacher/principal who worked in Canada at a variety of schools and roles. School Safety plans (including active shooting situations) are planned with a series of steps/protocols and assigned roles. Locking the outside door is priority number one. School exterior doors just require a hex key (allen wrench) to lock them. Most school are down to one door unlocked for any visitors/parents with the remaining locked at all times (this can vary by division though). Regardless in an emergency situation that is priority number one.
Classroom doors are also lockable (often with just a push button on the inside, some require a key to lock). Most teachers keep their doors locked but open a crack during the everyday activities. Locking that door is their obligation in a "code red" (internal lockdown). Regular drills are conducted (just like fire drills) and I would always let everyone know that we would be having a lockdown drill that day (and then have it early to get it out of the way as this causes distress in a lot of students). School drills took under a minute to announce/implement/lock all the doors and even for me to go check every door from the central hallway (smaller school admittedly but the student/teacher part is well rehearsed and is done in seconds).
Schools also have an secure exterior level where outside doors are locked (no outside recess/gym/classrooms) but internal operation as normal. With covid restrictions many schools have been operating this way daily. We would go this mode if ANYTHING was happening in town.
Helicopter "Karen" parents phone the school at the slightest rumor or incident in a small community (school related or not). Schools are actually pretty well informed on what is going on in the community because everyone's kids go there.
Police protocol if for responding officers to confront the shooter and not to secure perimeter and wait for support. This is the protocol because the shooter will often surrender or commit suicide when confronted by any level of fire power. The RCMP have floor plans of all the schools and I toured many members through the school as part of their community outreach. They even took rooftop view and exterior pictures of the schools in their areas.
Anyway the Texas narrative will not stand up to scrutiny. If we are truly watching a movie I find it hard to believe that the plan would include allowing the slaughter of 19 children. Seems like a whole staged distraction event. Potato was ready with his divisive speech, Beto took advantage of the press conference to grandstand, media has their distraction event from the Sussman trial. It all just seems to convenient.