"...Was it a tactical light or basic flashlight?..." And the difference is what? The term 'tactical' is a marketing thing only.
"...It produced instant compliance..." Rule Number One. It worked, don't fix it. There's nothing aggressive about a flashlight. The gun shop I worked in, long ago, sold Pro-Light flash lights to a lot of cops. ABS bodies(Al gets really cold in Canada) with mediocre switches, but a 100% guarantee on the switches. One cop came in with a damaged switch. The body had tooth marks in it. Cop said the guy resisted arrest.
"...Body language and firm tone of voice..." That alone can fix a lot of situations. How you carry yourself makes a difference. Even if you're of a normal size.
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