Night perimeter: person on the fence-line path

Name: Night perimeter: person on the fence-line path
Uploaded: 2026-10-14
Duration: 8 s
Description: Fog, snow and a few street lamps. A person walks the perimeter path; a zone covering the path raises an alert the moment someone is in it after hours.

Fog, snow and a few street lamps. A person walks the perimeter path; a zone covering the path raises an alert the moment someone is in it after hours.