Nothing. Absolutely nothing. Don't touch any of the equipment.
6 seconds sound clip from the Jaws (1975) movie soundboard.
You can hear this line at 00:48:45 in the Blu-ray version of the movie.
Quote context
[...]
- We will. We will. I just got to check something out.
- Don't worry, Martin. Nothing's going to happen.
- What am I supposed to do while you're gone?
- Nothing. Absolutely nothing. Don't touch any of the equipment.
- I'll be back in two minutes.
- This is a great white, Larry. A big one.
- Any shark expert will tell you it's a killer, a man-eater.
- And he is going to continue to feed here as long as there's food in the water.
[...]