I couldn't have told you what had changed in the voice, but it raised the tension level another notch.

There were maybe ten of us left in the place, and the tension level dropped to some more familial feel.

Or maybe he just didn't like the tension level in the room.

The moment she moved back the tension level in the room plummeted.

The moment the gun flashed to the room, the tension level rose.

Richard took two steps forward, and the tension level in the room soared.

I'm not sure they believed me, but the tension level started to drop almost immediately.

He could feel the tension level rising in the room.

The minute he walked out the door, the tension level dropped by half.

"Then why is the tension level so high in here?"