I think this is also why the witnesses diin command to drop it. Depending where you are in the OODA loop, you might not process hearing such a thing.
Back when I lived in Mass. And worked 2nd shift, I was impacted by an explosion. It was 130 AM, and I was driving home. As I approached the exit for my house, a nearby solvent factory blew up, sending flames 200 feet in the air. I was still on the highway. I remember the blast blowing my car uncontrollably in to the outer lane. I remember the sudden drop in barometric pressure and how it immediately made me feel so achy I felt like I had instantly caught the flu. I remember the damage to the sidewalks, and the huge fireball, and how my neighbors thought it was the old Eastern Propane storage yard that blew up. (I don't think anyone knew that right in our proverbial back yard was a 5-employee plant that made ridiculously volatile paints)
I don't remember the sound of the explosion. It happened. It was loud, and heard for miles. People asked me what it sounded like, I kept saying I didn't hear it. I was only a mile away, of course I heard it. But I didn't process it.
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