Fun fact: I made knives. Mostly for film & theatrical purposes. Found out something interesting along the way.
Anything less than 10 inches long with a 5" blade, vanishes in the actor's hands and the audience never sees it. Even in a black box. The letter opener I made for No Exit was bigger than a steak knife at longhorn, and even then it was hard to see.
Now, the multitool I use? 4.5" handle, 3" knife blade. Blade's hard to see even inside Tueller drill distance.
Now, the ambulance chasing fuckweasel representing the family of the asshole who committed suicide by cop on the GT campus the other night is claiming the officer overreacted. The deceased was supposedly carrying a closed multitool.
Bullshit. If anything, the officer underreacted. He allowed the deceased to come within Tueller drill range while armed with a knife. The fact that the knife wasn't opened couldn't be determined by the officer at distance means shit. Because by the time they could get a positive ID, they already would've been in range of a lethal attack they couldn't stop.
It's the same principal that lets cops shoot you if you shove a hand into a pocket when told to keep your hand in place. They have NO obligation to let you shoot first, nor are they obligated to read your mind and discover you really have a gun in there. Said actions constitute a threat whether the FB armchair quarterbacks agree or not.
P.S.: 21' is an average.
I will neither confirm nor deny the existence of individuals who can do such a thing from twice that distance. Nor rumors of it being done in a relatively uncrowded ballroom.
P.P.S. : About a year back a German cop shot a machete-wielding guy in the leg before managing to arrest him. Never saw any followup on how much mobility the machete guy had. But I did remember headdesking with a thought of, "oh, peachy. Now every amateur hour dipshit out there has an exception that proves the rule to crow about."