Would you start firing knowing the Secret Service will fire? Unless you have the ‘go’ you better not fire...you'll be the one down.
The shooter fired immediately after saw the officer....he knew he'd been had.
Do you really think they’re going to take a walk around the building to locate a ladder . . .
_______________________________________
Obviously, the perp didn’t hide the ladder after he was up on the roof so you are suggesting he had an accomplice. If you’re faced with an imminent threat, you use what you have available to you to try and stop the threat. You have your radio, but it suspiciously appears the good guy snipers were inexplicably holding their fire until the shooter took his first best shot, even though they could clearly see the threat unfolding in front of them. Obviously, you wouldn’t stand out in the open to fire the alerting rounds, the report from the round going off is the altering signal to others within earshot. The warning shots may not have been in time, I’m just saying you have to do something in that situation. There are so many instances of missed opportunities in this debacle, I find the entire event so extremely infuriating that I’m forced to conclude there must be something very dark and sinister going on.