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1 / 3 Show Caption + Hide Caption – Staff Sgt. Jesus Medina, performs the Horizontal Gaze Nystagmus (HGN) test at the Sierra Vista Police Department during an HGN course June 7-9.
On the other hand, the horizontal gaze nystagmus test’s 88% accuracy presents a much more reliable means of detecting inebriation. Predictably, ...
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