Sam Fisher- Face Pressure Points

  Sam waited five minutes for the drug to dissipate, then pulled his chair forward until he was knee-to-knee with Greenhorn. He reached out and pressed his knuckle into the base of Greenhorn's septum. The pain snapped Greenhorn awake.

  "Hey . . . hey, what the, what the--"

  Fisher gripped him by the chin, thumb pressed into the hollow of his throat. "Don't make a sound." He jammed this thumb a little deeper; Greenhorn gagged. "Do you understand?"

  Greenhorn nodded.

- Checkmate, Chapter 21