You all set? Let her go.

4 seconds sound clip from the The Thing from Another World movie soundboard.

You can hear this line at 00:42:25 in the Blu-ray version of the movie.

Quote context

[...]

- I expect you're right. I was a little overanxious.

- Look over here, captain!

- Alright, I think I've got yours.

- May I have one, captain?

- You better let us go, doctor.

- Hey doc, can you see anything out there?

- Not much.

- You all set? Let her go.

- Captain, it would help me if you... any of you... would describe what you saw out there.

- Well, it was too cold to see well...

- The dogs had him down, tearing at him.

- I saw him get up with three of them hanging on his arm.

- Then he threw one dog at the rest.

- When we got there, two of them were dead.

- And they looked like they'd been through a chopper.

- Where did you find the arm?

- It was partly under one of 'em.

- Couldn't dogs tear off an arm?

- This kind of an arm.

- Be careful, doctor. Those barbs, or whatever they are, are very sharp.

[...]