Those two rapidly accessed the situation which may only take a few to several seconds. They likely accessed they were dealing with a lone gunman (usually the case) who didn’t know that they were coming in or from what direction with such rapidity so surprise was on their side.
I tried to find that interview but can’t.
I did find some details. They drove up, saw muzzle flashes through a window. Got out of the car and running towards the building they were shot at. They returned fire, hitting him once. The gunman went into a classroom and killed himself.
So yeah - I guess seeing muzzle flashes they at least knew where one shooter was. (From the 911 calls they are just calling about one shooter). First 911 call at 10:38. Detectives and a highway patrol officer show up at 10:44.
Still - I’m guessing these Broward County guys would have stayed behind their squad cars.
The oregon shooting, the gunman asked people that were Christians to stand up - then he shot them. Ten dead.