He was Armed,and answered his front door.

This guy was concerned,BUT not concerned enough to CCTV his front Porch ???

1st rule:NEVER answer the Front Door.
["Peep" around the Side of the house at the front door,
Eliminate the Threat,
conduct Search for other Bad Actors nearby,
open front door and drag Perp across threshold.
Call Coroner.]

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'84 300SD sold
124.128