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If it had been me, I would've backed off and used that scoped, suppressed AR rifle at lower left to decap the "snattlerake". (I copied the photo into post-processing software, and used a "shadow illumination" adjustment on it...)
It's also cool that the handgun was suppressed, too. My guess is the guy was cat hunting, and just bumbled onto the snake...
IIRC, suppressors for hunting are legal in Texas.
He said he was looking for a coyote he’d shot.