[DManA]

Reed wrote, “I instinctively drew my handgun and fired once, striking the dog in the top of the head.”

By his own admission he wasn't even thinking. Just automatically whipped up his gun and fired. That is just disturbing. Whenever this guy feels threatened he shoots. According to him.

[Altariel]

That is what they are being trained to do, per the famous “no hesitation” targets.