Plot hole: The Unit discovers a soldier who they think is Betsy, tied to a chair. They note that the room is covered with PIRs or Passive Infrared Sensors. They then take out their night-vision goggles and begin counting the number of "infrared lines" they see. However, PIR sensors don't emit anything; they are passive. (00:23:15)
The Unit (2006)
1 mistake in Into Hell: Part One - chronological order
Starring: Robert Patrick, Dennis Haysbert, Audrey Marie Anderson, Regina Taylor
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