[PerConPat]

I agree with your comment. Based on info I could find, the timeline went something like the following:

11:33 a.m......The suspect enters the schoo1
11:35 a.m......Officers arrive at the school
11:51 a.m......Police sergeant and US Border agents start to arrive
12:03 p.m......Officers assemble in the hallways
12:03 p.m..... Students begin to call 911
12:45 p.m......Border Patrol Tactical Unit disregarded orders to not engage
12:50 p.m......The shooting suspect is killed

If this is accurate, I can come to no other conclusion than yours.

[BiglyCommentary]

Notice 5 MINUTES from the BP DOING THE RIGHT THING and the shooter being dead.

[combat_boots]

Who are the two in black watching the guy go directly toward a partially obscured entrance?

https://defiantamerica.com/video-newly-uncovered-footage-of-the-texas-school-shooter-at-the-backdoor-of-the-school-raises-more-questions/