Pocket knifes & LEOs?

Here's my pocket knife that I've been carrying for over a year, if you look close you can barely see it poking out of my pocket. It has a red string attached to it:
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Here it is out of my pocket. It automatically opens when I pull it out. Probably takes a 1/20 of a second to open as I'm pulling it out of my pocket.:
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I have big hands so the knife itself is pretty large. If anybody should ask me for my wallet I just reach in my pocket and pull out my sword....and yes, it's razor sharp!!!