how are they identifying and catching these Islamic and domestic terrorists so quick?

In most cases they are not relying on the public as they are purposely misleading the public IE: the Cascade mall shooter.

it seems that when the Feds get involved they know exactly who these shooters are within 24 hours or less, generally all the evidence they have is grainy surveillance video.

So how are they doing it? Facial recognition or cell phone pinging? It's one of the two. I suspect it's cell phones, somehow they are identifying these shooters via their cell phones, the GPS info must be stored somehow and they can go back and cross reference it to the surveillance videos. Thats the only explanation I can think of.....

logically there is no way they should be able to identify and catch these guys so fast, they must be using some kind of illegal technology, because they can't identify and catch normal criminals that fast....