- Level?
- Check.

4 seconds sound clip from the The Green Berets (1968) movie soundboard.

You can hear this line at 01:18:14 in the Blu-ray version of the movie.

Quote context

[...]

- Been assigned to your position?

- No, I haven't. (2)

- You better come with me.

- Right front, 200.

- Get some AG. We'll be dropping it close, so make it charge 7.

- Level?

- Check.

- Everything copacetic, sergeant?

- Ready to fire.

(EXPLOSIONS) (2)

- Hit the bunker!

[...]