>>18671859 (lb)
>are saying it's due to training.
>what is going on?
For years we've been told the "They were on our radar" nonsense. There's even a Bart Simpson meme on this. Prior arrests, counseling, and ABCs knowing about the shooters already was always a discussed point. Seems like it's a bit different, here; like maybe they were on the scene so quickly because <fill in the blank, here>.