It's kind of like terrorist.
They have to be ready once, we have to be ready 100% of the time.
Take into account, the Clackamas Sheriff's office is 1 block away from the Mall, they use the Mall to train for active shooter situations, LE was prepared.
AND, according to reports, from the time of the first call it took 22 minutes to secure the scene.
Something to think about.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071