Faster than guard

He saw a thickset man in a rumpled security uniform through the
widening gap, but didn’t give him time to react. Jensen slammed the heel of
his hand on the door, forcing it back to hit the unwitting guard in the face.
The man stumbled back, shouting out. “Hey, you can’t be in here…”

Belatedly, he caught up to what he was looking at and his hand dove at a
holstered stun gun.

But Jensen was ready and he was faster. He pushed in, snaking his arm
around the guard’s throat, tightening the hold in a matter of heartbeats. The
man tried to say more, but all that emerged from his lips was a dry gasp.

Jensen carefully applied more pressure to the sleeper hold, feeling the
resistance ebb out of the guard. Too tight for too long, and he could kill this
guy; too loose and he risked him breaking free. “Don’t fight it,” Jensen told
him.

The stun gun clattered to the floor and at last the guard went slack.
Jensen lowered the unconscious man into a chair, kicking the door closed as
he did so.

- Deus Ex: Black Light, Chapter 8 pg. 150