"...be in control of your emotions..."
Why, if you and olepap have keenly sensed good natured high-jinks going on? You know, telling a child with a toy gun in the dark from an active shooter; the skill sorely lacking in many police shootings.
And if it is an active shooter, why would I be jammed at the exits with a hundred other folks, waiting to get mowed down? You're damned right I'd be shooting back. Call me a Rambo or any name you want.