You want Sublevel 3.
4 seconds sound clip from the Aliens (1986) movie soundboard.
You can hear this line at 01:06:06 in the Blu-ray version of the movie.
Quote context
[...]
- Advance on axial 664. Tracker on line. Set the V gain to filter R.F. ambient.
- Left and right, little buddy.
- Forty meters in, bearing 221, there should be a stairwell.
- Let's go, people. Hudson, you got the point.
- Nice and easy. Check those corners. Check those corners.
- All right. You heard the man. Don't bunch up. Stay loose.
[...]